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Japan's history is not a single line.

Two tracks share one chronology: 200 anchor events from the Paleolithic to Reiwa, and a high-resolution reading of Jōmon, Yayoi, and Kofun ritual. Politics, everyday life, technology, regions, disaster, and belief occupy the same timeline.

Content last updated: September 4, 2026

anchor events
200
periods
18
ancient deep dives
4
core sources
24

200 anchor events in Japan's history

Find an event or region, then read within its period. Follow each claim to its sources, and each source back to the events that cite it.

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Search event titles, dates, text, and source names. Separate multiple terms with spaces.

Events by period
Counts reflect the current keyword, theme, and region. Selecting a period narrows the timeline. Bar length represents the number of events, not a period’s importance or duration. Where evidence is sparse, each event carries more uncertainty.

Showing 200 of 200 events

Paleolithicc. 37,000–16,000 years ago · 4 events

Human arrival, sea crossings, and lithic technologies across the archipelago.

  1. Modern humans reach the Japanese archipelago

    • Society and life
    • Environment and disaster
    • Science and technology

    Region: Japanese archipelago, East Asia

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Late Paleolithic sites show modern humans living mobile hunter-gatherer lives across the cold archipelago during the last glacial period.

    Sources[1]

  2. Obsidian moves across open water

    • Society and life
    • Economy
    • Science and technology

    Region: Kantō, Chūbu

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    The use of Kōzushima obsidian indicates that Paleolithic communities crossed sea channels to transport resources and share knowledge.

    Sources[1][7]

  3. Pitfall lines and planned resource use spread

    • Society and life
    • Environment and disaster
    • Science and technology

    Region: Kantō, Chūbu

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Rows of hunting pits and lithic workshops show groups reading terrain and animal movement, and hunting to a plan.

    Sources[1][7]

  4. Pottery appears as lifeways shift toward Jōmon

    • Society and life
    • Culture
    • Environment and disaster
    • Science and technology

    Region: Japanese archipelago

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Pottery appeared amid late-glacial environmental change, widening cooking and food-processing options. The period boundary marks regional transitions, not an overnight break.

    Sources[1]

Jōmonc. 16,000–3,000 years ago · 10 events

Pottery, increasingly settled lifeways, exchange networks, and changing ritual worlds.

  1. Incipient Jōmon pottery traditions take hold

    • Culture
    • Society and life
    • Science and technology

    Region: Tōhoku, Japanese archipelago

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Early ceramics from sites such as Ōdai Yamamoto I show very early container use in the archipelago, though radiocarbon estimates retain measurement ranges.

    Sources[2][1]

  2. Lacquer technology develops

    • Culture
    • Science and technology
    • Economy

    Region: Hokkaido, Tōhoku

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Lacquer objects from the Initial and Early Jōmon onward reveal sophisticated knowledge of harvesting, refining, and applying tree sap.

    Sources[2][7]

  3. More settled communities spread

    • Society and life
    • Environment and disaster
    • Economy

    Region: Japanese archipelago

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Communities with pit houses, storage pits, and burial zones spread, while the balance of mobility and residence still varied by ecology and season.

    Sources[1][2]

  4. A large settlement grows at Sannai-Maruyama

    • Society and life
    • Economy
    • Belief and ritual
    • Science and technology

    Region: Tōhoku

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Numerous buildings, burials, middens, storage facilities, and jade and obsidian from distant sources demonstrate long-term aggregation and far-reaching exchange.

    Sources[3][2]

  5. Jade, obsidian, and bitumen travel long distances

    • Economy
    • Society and life
    • Culture

    Region: Japanese archipelago

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Provenance studies show bulky and rare materials moving hundreds of kilometers. Archipelago communities were not isolated local units.

    Sources[1][7]

  6. Dogu and ritual expression diversify

    • Belief and ritual
    • Culture
    • Society and life

    Region: Japanese archipelago

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Dogu figurines, stone rods, and deliberately broken objects indicate ritual practices, but they do not permit direct reconstruction of specific deities or meanings.

    Caveat: Interpretations remain plural and should not be projected directly onto later shrine ritual.

    Sources[1][2]

  7. Stone circles create communal places

    • Belief and ritual
    • Society and life
    • Environment and disaster

    Region: Tōhoku, Hokkaido

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Sites such as the Ōyu stone circles are understood as overlapping places of burial, ritual, and communal labor. A single astronomical function is not asserted here.

    Sources[2][1]

  8. Population and settlement reorganize in later Jōmon

    • Society and life
    • Environment and disaster
    • Economy

    Region: Japanese archipelago

    ClaimLeading Hypothesis: A research- or interpretation-level hypothesis, not yet the established consensus, and subject to revision

    After the Middle Jōmon, many large eastern settlements contracted or dispersed. Climate alone cannot explain changes that also involved resources and social relations.

    Caveat: Regional variation is substantial, and no single-cause model is established.

    Sources[1][2]

  9. Kamegaoka craft reaches its finest form

    • Culture
    • Belief and ritual
    • Economy

    Region: Tōhoku, Hokkaido

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Elaborate Final Jōmon pottery and goggle-eyed dogu in Tōhoku reveal skilled production and wide exchange, complicating simple narratives of decline.

    Sources[1][2]

  10. The Jōmon–Yayoi transition begins

    • Society and life
    • Economy
    • Environment and disaster

    Region: Kyushu, Japanese archipelago, East Asia

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    A new lifeway centered on wet-rice farming emerged in northern Kyushu while Jōmon lifeways persisted elsewhere. Transition dates must be given region by region.

    Sources[1][4]

Yayoic. 10th century BCE–mid-3rd century CE · 10 events

Wet-rice farming, metalworking, social stratification, and Wa diplomacy, without erasing regional variation.

  1. Wet-rice farming begins in northern Kyushu

    • Economy
    • Society and life
    • Environment and disaster
    • Science and technology

    Region: Kyushu, East Asia

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Irrigated fields, tools, and charred rice indicate the adoption of farming systems through interaction with the Korean Peninsula, while radiocarbon studies have pushed the start date earlier.

    Sources[1][4]

  2. The Nihon Shoki transmits the foundation tradition of Emperor Jinmu

    • Belief and ritual
    • Culture
    • Politics and institutions

    Region: Kinki, Kyushu

    Claim 1Myth & Tradition: Material transmitted as myth, legend, oral tradition, or regional folk belief

    The Nihon Shoki chronology traditionally converts Jinmu’s accession at Kashihara to 660 BCE. This is the time of a foundation tradition compiled in the eighth century.

    Sources[8]

    Claim 2Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    No contemporary text or archaeological evidence confirms an accession in 660 BCE, so the tradition is not treated as the literal chronology of Yayoi society.

    Sources[1][8]

  3. Bronze and iron technologies spread

    • Science and technology
    • Economy
    • Culture
    • Diplomacy and exchange

    Region: Kyushu, Chūgoku, Kinki, East Asia

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Continental metal objects were adopted as tools, weapons, and ritual instruments, then incorporated into distinct regional systems of production and ceremony.

    Sources[1]

  4. Moated settlements and regional tension increase

    • Society and life
    • War and conflict
    • Politics and institutions

    Region: Kyushu, Kinki

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Moats, weapons, and skeletal trauma attest to conflict, although not every enclosure was simply a military fortress.

    Sources[1][4]

  5. Yoshinogari grows from village to regional center

    • Society and life
    • Politics and institutions
    • Economy
    • Belief and ritual

    Region: Kyushu

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Outer moats, inner precincts, large buildings, and elite burials provide an unusually clear record of settlement growth and of how political and ritual space became distinct.

    Sources[4]

  6. The king of Na in Wa sends an embassy to Later Han

    • Diplomacy and exchange
    • Politics and institutions

    Region: Kyushu, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Hou Hanshu records tribute by the king of Na in Wa and the granting of a seal, and the gold seal found in Fukuoka is associated with that relationship.

    Sources[1]

  7. Wa ruler Suishō sends an embassy

    • Diplomacy and exchange
    • Politics and institutions
    • Economy

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Chinese histories record an embassy to Later Han by Wa ruler Suishō and others, but neither the polity’s location nor its reach is securely identified.

    Sources[1]

  8. Civil conflict in Wa gives way to political realignment

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Chinese histories describe prolonged conflict in Wa followed by the collective selection of Himiko. Its extent, and how it maps onto the archaeological evidence, remain debated.

    Sources[1]

  9. Himiko opens diplomacy between Yamatai and Wei

    • Politics and institutions
    • Diplomacy and exchange
    • Belief and ritual

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Wei account records Queen Himiko’s embassies and the title “Queen of Wa, Friendly to Wei.” Yamatai’s location remains disputed, notably between Kinai and Kyushu models.

    Sources[1]

  10. Yayoi elite burials give way to keyhole tombs

    • Politics and institutions
    • Belief and ritual
    • Society and life

    Region: Kinki, Chūgoku, Kyushu

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Standardized keyhole tombs, drawing on regional elite-burial traditions, appeared around Kinai and signaled a wider order among chiefly elites.

    Sources[1][5]

Kofunmid-3rd–late 6th century · 10 events

Keyhole tombs, the Yamato polity, migrant technologies, and a reshaped archipelago.

  1. Hashihaka marks the emergence of giant keyhole tombs

    • Politics and institutions
    • Belief and ritual
    • Science and technology

    Region: Kinki

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Hashihaka in the Nara Basin is regarded as one of the earliest giant keyhole tombs, though identifying its occupant as Himiko is not established.

    Caveat: Administrative mausoleum designation and archaeological dating or attribution are separate lines of evidence.

    Sources[1][9]

  2. The Yamato polity’s broad alliance expands

    • Politics and institutions
    • Society and life
    • Diplomacy and exchange

    Region: Kinki, Japanese archipelago, East Asia

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Shared tomb forms and grave goods point to an expanding political network linking regional leaders around a Kinai core, not a completed centralized state.

    Sources[1][5]

  3. The Seven-Branched Sword reflects ties with Baekje

    • Diplomacy and exchange
    • Culture
    • Politics and institutions

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The inscription on the Seven-Branched Sword preserved at Isonokami is central evidence for Wa–Baekje relations, though its date and diplomatic wording are contested.

    Sources[1][7]

  4. The Gwanggaeto Stele records warfare on the Korean Peninsula

    • War and conflict
    • Diplomacy and exchange
    • Politics and institutions

    Region: East Asia, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Gwanggaeto Stele records peninsula conflicts involving Wa, but damage to the stone, its context, and the identity of its grammatical subjects call for caution. It is not a simple record of territorial possession.

    Sources[1]

  5. Horses, armor, Sue ware, and smithing spread

    • Science and technology
    • Economy
    • War and conflict
    • Culture

    Region: Japanese archipelago, East Asia

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Movement of people and knowledge to and from the Korean Peninsula supported new systems of horse gear, iron weaponry, and high-fired Sue ware production.

    Sources[1][7]

  6. Giant tomb clusters rise at Mozu and Furuichi

    • Politics and institutions
    • Belief and ritual
    • Society and life

    Region: Kinki

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Tombs of varied scale and form made visible hierarchical relations, massive labor mobilization, and sustained funerary practice.

    Sources[5][1]

  7. The Five Kings of Wa send missions to the Southern Dynasties

    • Diplomacy and exchange
    • Politics and institutions
    • War and conflict

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Chinese dynastic histories record missions by San, Chin, Sei, Kō, and Bu seeking titles, showing Wa rulers using continental diplomacy to bolster regional and domestic authority.

    Sources[1]

  8. Migrant communities support production and written administration

    • Society and life
    • Science and technology
    • Economy
    • Culture

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Migrant and local communities worked together in the spread of Sue ware, weaving, smithing, engineering, and written administration.

    Sources[1][6]

  9. The Iwai conflict reveals northern Kyushu’s autonomy

    • War and conflict
    • Politics and institutions
    • Diplomacy and exchange

    Region: Kyushu, Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The conflict around Tsukushi no Kimi Iwai reveals the strength of regional leadership and peninsular ties that a simple model of unilateral Yamato control cannot accommodate.

    Sources[1]

  10. Official transmission of Buddhism reshapes belief

    • Belief and ritual
    • Diplomacy and exchange
    • Politics and institutions
    • Culture

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Two traditional dates survive for the arrival of Buddhist images and texts from Baekje. Buddhism coexisted with and reshaped local rites through clan politics rather than simply replacing them.

    Sources[1]

Asuka592–710 · 10 events

The adoption of Buddhism, diplomacy, and experiments in building a ritsuryō (code-based) state.

  1. The Soga defeat the Mononobe

    • War and conflict
    • Politics and institutions
    • Belief and ritual

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Mononobe no Moriya’s defeat strengthened Soga political power and advanced temple construction, but the conflict was not a simple Buddhism-versus-Shinto religious war.

    Sources[1]

  2. Empress Suiko accedes

    • Politics and institutions
    • Diplomacy and exchange
    • Belief and ritual

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Under Suiko, Prince Umayado, Soga no Umako, and others advanced institutional reform and diplomacy with Sui. Governance should not be reduced to one “regent.”

    Sources[1]

  3. Wa sends its first recorded mission to Sui

    • Diplomacy and exchange
    • Politics and institutions

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Book of Sui records a mission in 600 and a Sui assessment of Wa’s institutions and customs, while the Nihon Shoki omits this mission.

    Sources[1]

  4. The Twelve Cap Ranks are instituted

    • Politics and institutions
    • Culture

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A system in which the court assigned rank to officials supplemented hereditary clan order and supported diplomacy and emerging bureaucracy.

    Sources[1]

  5. The Seventeen-Article Constitution sets out official ethics

    • Politics and institutions
    • Belief and ritual
    • Culture

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Unlike a modern constitution, the Seventeen Articles survive as a normative text that, in Buddhist and Confucian language, urges officials toward concord and service to royal authority.

    Sources[1]

  6. Ono no Imoko and others travel to Sui

    • Diplomacy and exchange
    • Politics and institutions
    • Culture

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Missions to Sui negotiated Wa’s place in the East Asian order and returned with institutional and intellectual knowledge through students and monks.

    Sources[1]

  7. The Isshi Incident is followed by the Taika Reforms

    • Politics and institutions
    • War and conflict
    • Economy

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After Soga no Iruka’s assassination, reforms gradually shifted land, people, and provincial administration toward the court. They were not one completed revolution in 645.

    Sources[1]

  8. Wa–Baekje forces lose at Baekgang

    • War and conflict
    • Diplomacy and exchange
    • Politics and institutions

    Region: Kyushu, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After defeat by Tang–Silla forces, Wa fortified northern Kyushu and built beacon systems on Tsushima and Iki, accelerating state formation under external pressure.

    Sources[1]

  9. The Jinshin War breaks out

    • War and conflict
    • Politics and institutions

    Region: Kinki, Chūbu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Prince Ōama’s victory in the succession war after Tenji’s death led to the Tenmu court’s centralization, its compilation of history, and its reorganization of ritual.

    Sources[1]

  10. The court moves to Fujiwara-kyō

    • Politics and institutions
    • Culture
    • Science and technology

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A large gridded capital gave permanent spatial form to the court and its bureaucracy, becoming a foundation of the ritsuryō (code-based) state.

    Sources[1][7]

Nara710–794 · 8 events

Heijō-kyō, law codes, official chronicles, state Buddhism, and landholding.

  1. The Taihō Code is promulgated

    • Politics and institutions
    • Economy
    • Society and life

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The code systematized penal and administrative law and set the framework for offices, provinces, household registers, and land allotment, though implementation was uneven.

    Sources[1]

  2. The capital moves to Heijō-kyō

    • Politics and institutions
    • Culture
    • Economy

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A planned capital modeled partly on Tang cities concentrated the palace, offices, temples, and markets while drawing taxes and people from across the realm.

    Sources[1][7]

  3. The Kojiki is presented to the court

    • Culture
    • Belief and ritual
    • Politics and institutions

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Kojiki wove myth, genealogy, song, and royal narrative into a memory of rulership, though its compilation date must be distinguished from the past it narrates.

    Sources[1]

  4. The Nihon Shoki is completed

    • Culture
    • Politics and institutions
    • Diplomacy and exchange
    • Belief and ritual

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Written as a chronological history in Literary Chinese, the Nihon Shoki framed the state’s past in an East Asian official-history form and often preserved variant accounts.

    Sources[1]

  5. The Great Buddha edict and permanent private fields are decreed

    • Belief and ritual
    • Politics and institutions
    • Economy
    • Environment and disaster

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    State Buddhism and land-development policy advanced together after epidemic and famine, seeking integration and revenue while opening paths toward expanding private estates.

    Sources[1]

  6. The Great Buddha of Tōdaiji is consecrated

    • Belief and ritual
    • Culture
    • Diplomacy and exchange
    • Economy

    Region: Kinki, East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The consecration included the South Asian monk Bodhisena, and the project reflected both nationwide mobilization and maritime connections.

    Sources[1]

  7. The Man’yōshū takes shape

    • Culture
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The roughly 4,500 poems of the Man’yōshū preserve court verse alongside frontier guards’ songs and eastern voices. The anthology formed through a long compilation process.

    Sources[1]

  8. The capital moves to Nagaoka-kyō

    • Politics and institutions
    • Economy
    • Environment and disaster

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Emperor Kanmu left Heijō and built Nagaoka, but political conflict and flood-control problems preceded another move ten years later.

    Sources[1]

Heian794–1185 · 14 events

Court rule and culture, the rise of provincial warriors, cloistered rule, and civil war.

  1. The capital moves to Heian-kyō

    • Politics and institutions
    • Culture
    • Economy

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Heian-kyō remained the center of monarchy and court culture for over a millennium, sustained by flows of goods and people from its margins and provinces.

    Sources[10]

  2. Saichō and Kūkai develop new Buddhist institutions

    • Belief and ritual
    • Culture
    • Diplomacy and exchange

    Region: Kinki, Shikoku, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Returning from Tang, Saichō and Kūkai developed Tendai and Shingon learning and practice, shaping mountain temples, state ritual, and local belief.

    Sources[10]

  3. Fujiwara no Yoshifusa becomes regent

    • Politics and institutions
    • Society and life

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The northern Fujiwara consolidated governance through regency and marital ties to emperors, binding kinship and office into political power.

    Sources[10]

  4. Official missions to Tang are suspended

    • Diplomacy and exchange
    • Culture
    • Economy

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Official missions ceased after Sugawara no Michizane’s proposal, but monks, merchants, and goods kept crossing the seas. Court culture did not emerge from isolation.

    Sources[10]

  5. Taira no Masakado rebels against the court

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The warrior Taira no Masakado attacked provincial offices and reportedly proclaimed himself New Emperor, exposing tensions between provincial force and court rule.

    Sources[10]

  6. Fujiwara no Sumitomo leads a maritime rebellion

    • War and conflict
    • Economy
    • Politics and institutions

    Region: Shikoku, Chūgoku, Kyushu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Fujiwara no Sumitomo’s maritime rebellion exposed tensions in the Inland Sea and the west over shipping, security, and provincial officials.

    Sources[10]

  7. Kana literature records court society

    • Culture
    • Society and life

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Kana works by court women, including The Pillow Book and The Tale of Genji, rendered emotion, power, and everyday life in distinctive prose.

    Sources[10]

  8. Fujiwara no Michinaga reaches the height of power

    • Politics and institutions
    • Society and life
    • Culture

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Michinaga became regent through imperial grandchildren and daughters at court, but regency politics depended on wider relations among the monarch, the aristocratic houses, and court women.

    Sources[10]

  9. The Former Nine Years’ War reshapes power in Tōhoku

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Tōhoku, Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    War among the Abe, Minamoto, and Kiyohara reshaped relations among the powers of Tōhoku, the court, and eastern warriors while building warrior prestige.

    Sources[10]

  10. Cloistered government begins

    • Politics and institutions
    • Society and life
    • Belief and ritual

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Retired Emperor Shirakawa governed through his own office, reconfiguring power among the emperor, the regent houses, temples, shrines, and warriors.

    Sources[10]

  11. The Hōgen Rebellion breaks out

    • War and conflict
    • Politics and institutions

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Warriors were drawn into disputes over succession and the regent house, and armed force became an increasingly open way of settling conflict at court.

    Sources[10]

  12. The Heiji Rebellion opens the way to Taira rule

    • War and conflict
    • Politics and institutions

    Region: Kinki, Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Taira no Kiyomori’s side defeated Minamoto no Yoshitomo, allowing the Taira to build central power through court office and maritime trade.

    Sources[10]

  13. The Jishō–Juei War reshapes rule across the archipelago

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Taira and Minamoto lineages and local warriors fought amid famine, reorganizing authority across the archipelago. It was broader than a two-clan “Genpei War.”

    Sources[10]

  14. The Taira fall at Dan-no-ura and Yoritomo gains the power to appoint shugo and jitō

    • War and conflict
    • Politics and institutions
    • Economy

    Region: Chūgoku, Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Taira regime fell at Dan-no-ura and Yoritomo gained authority to appoint shugo (provincial military governors) and jitō. The founding of the Kamakura regime is dated to more than one turning point, 1185 and 1192 among them.

    Sources[10]

Kamakura1185–1333 · 13 events

Dual court-warrior authority, vassal society, new religious movements, and the Mongol invasions.

  1. Minamoto no Yoritomo becomes shogun

    • Politics and institutions
    • Society and life

    Region: Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Yoritomo’s appointment as shogun was an important milestone, but Kamakura government had emerged in several steps, including the 1185 appointment of shugo (provincial military governors) and jitō (estate stewards).

    Sources[10][11]

  2. New Buddhist movements spread

    • Belief and ritual
    • Society and life
    • Culture

    Region: Kinki, Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Movements associated with Hōnen, Shinran, Eisai, Dōgen, Nichiren, and Ippen gained followers among warriors, townspeople, and rural communities within a diverse field that also included reform inside older schools.

    Sources[10]

  3. Hōjō regency takes shape

    • Politics and institutions
    • Society and life

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Minamoto no Sanetomo became shogun and Hōjō Tokimasa regent, and a Hōjō-centered system for supporting and controlling the shogun took shape around them.

    Sources[10][11]

  4. The Shin Kokinshū is presented to the court

    • Culture
    • Politics and institutions

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Commissioned by Retired Emperor Go-Toba, the imperial anthology shows the Kyoto court retaining cultural creativity and authority after warrior rule emerged.

    Sources[10][11]

  5. Shogun Sanetomo is assassinated

    • Politics and institutions
    • War and conflict

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Shogun Minamoto no Sanetomo was killed at Tsurugaoka Hachimangū by his nephew Kugyō; after the direct Minamoto shogunal line ended, the Hōjō maintained rule under shoguns brought from Kyoto.

    Sources[10][11]

  6. The Jōkyū War breaks out

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Kinki, Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After defeating Retired Emperor Go-Toba’s forces, the shogunate established the Rokuhara Tandai in Kyoto and extended influence westward by assigning vassals to confiscated estates.

    Sources[10][11]

  7. The Goseibai Shikimoku is issued

    • Politics and institutions
    • Society and life

    Region: Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The fifty-one articles issued under Hōjō Yasutoki became standards for judging vassal disputes over land and inheritance, and they coexisted with court law rather than replacing it outright.

    Sources[10][11]

  8. Casting begins on the Great Buddha of Kamakura

    • Belief and ritual
    • Culture
    • Economy

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Records describe work beginning on a monumental gilt-bronze Amitābha in Kamakura. Casting on that scale reflects the skills, fundraising, and devotion of the city.

    Sources[10][11]

  9. Mongol forces invade in the Bun’ei campaign

    • War and conflict
    • Diplomacy and exchange
    • Politics and institutions

    Region: Kyushu, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Forces led by the Yuan and Goryeo attacked Tsushima and Iki and landed at Hakata Bay, where the shogunate mobilized Kyushu vassals to resist them.

    Sources[10][11]

  10. Mongol forces invade again in the Kōan campaign

    • War and conflict
    • Diplomacy and exchange
    • Environment and disaster

    Region: Kyushu, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Vassals used coastal defenses to contain Yuan fleets arriving from two directions, while storms inflicted further devastation; weather alone does not explain the outcome.

    Sources[10][11]

  11. The shogunate issues the Einin debt-relief decree

    • Economy
    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate tried to restore lands lost by indebted vassals, but undoing sales and pledges disrupted credit and land markets without resolving the vassal system’s structural distress.

    Sources[10][11]

  12. The Genkō War breaks out

    • Politics and institutions
    • War and conflict

    Region: Kinki, Chūgoku, Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Emperor Go-Daigo’s attempt to overthrow the shogunate widened into war, and defections by powerful warriors including Ashikaga Takauji and Nitta Yoshisada rapidly broke Kamakura rule.

    Sources[10][11]

  13. The Kamakura shogunate falls

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Kantō, Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Nitta Yoshisada’s forces captured Kamakura, and Hōjō Takatoki and others died by suicide. Roughly 150 years of Kamakura government ended, and a struggle to remake political order began.

    Sources[10][11]

Nanbokuchō–Muromachi1333–1568 · 13 events

Ashikaga rule, East Asian trade, self-governing villages and cities, and the slide into civil war.

  1. The Kenmu government rises and collapses

    • Politics and institutions
    • Society and life
    • War and conflict

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Go-Daigo sought to restore emperor-centered rule, but disputes over rewards and landholding fed a civil war led by Ashikaga Takauji, and the government quickly collapsed.

    Sources[10][11]

  2. The Northern and Southern Courts contend as Ashikaga rule takes hold

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Ashikaga Takauji built a warrior government in Kyoto while the Southern Court at Yoshino contested the Northern Court, a civil war that transformed provincial governors’ power and local alignments.

    Sources[10][11]

  3. The Northern and Southern Courts reunify

    • Politics and institutions
    • Diplomacy and exchange

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Through Ashikaga Yoshimitsu’s mediation, Southern emperor Go-Kameyama returned to Kyoto and transferred the regalia, but the promised alternation of lines did not occur and Southern resistance persisted.

    Sources[10][11]

  4. Tally trade with Ming China begins

    • Diplomacy and exchange
    • Economy
    • Culture

    Region: Kinki, Kyushu, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Yoshimitsu sent an embassy in 1401, and from 1404 tally certificates distinguished official missions from piracy as coins, silk, books, and crafts circulated between Japan and Ming China.

    Sources[10][11]

  5. The Shōchō debt-relief uprising spreads

    • Society and life
    • Economy
    • War and conflict

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    An uprising involving transport workers in Ōmi helped trigger popular demands for cancellation of debts around Kyoto and Nara, and crowds attacked moneylenders and sake brewers.

    Sources[10][11]

  6. Shō Hashi unifies the Ryukyu Kingdom

    • Politics and institutions
    • Diplomacy and exchange
    • Economy

    Region: Ryukyu and Okinawa, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After Shō Hashi defeated Hokuzan and united Okinawa’s three kingdoms, the Shuri-centered Ryukyu Kingdom developed as a maritime polity linking Ming tributary relations with Southeast Asian trade.

    Sources[10]

  7. The Ōnin-Bunmei War engulfs Kyoto

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Disputes over shogunal and great-house succession expanded into a decade of war centered on Kyoto. The capital burned, and change in provincial power and local order accelerated.

    Sources[10][11]

  8. The Yamashiro provincial league governs

    • Society and life
    • Politics and institutions
    • Economy

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Local warriors and residents in southern Yamashiro expelled the rival Hatakeyama armies and governed the region for about eight years through assemblies and written rules.

    Sources[10][11]

  9. The Kaga Ikkō league ousts the provincial military governor

    • Belief and ritual
    • Society and life
    • Politics and institutions
    • War and conflict

    Region: Chūbu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A sworn league (ikki) of local warriors and farmers, including Honganji adherents, overthrew the provincial military governor Togashi Masachika. Rule in Kaga then rested for decades on temple towns and regional councils.

    Sources[10][11]

  10. The Meiō coup deepens political fragmentation

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Hosokawa Masamoto expelled Shogun Ashikaga Yoshitane and installed a rival, splitting shogunal legitimacy and speeding domain-building by regional warlords.

    Sources[10][11]

  11. Firearms reach Tanegashima

    • Science and technology
    • War and conflict
    • Economy
    • Diplomacy and exchange

    Region: Kyushu, East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Matchlock guns arrived with Portuguese voyagers on Tanegashima; local smiths reproduced them, transforming warfare as well as production and distribution.

    Sources[10][11]

  12. Christian missions begin

    • Belief and ritual
    • Diplomacy and exchange
    • Culture

    Region: Kyushu, East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Jesuit Francis Xavier arrived in Kagoshima, and a mission closely entangled with maritime trade spread from Kyushu toward the Kinai.

    Sources[10][11]

  13. Nobunaga wins at Okehazama

    • War and conflict
    • Politics and institutions

    Region: Chūbu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Oda Nobunaga of Owari defeated the invading Imagawa Yoshimoto, which shifted the balance in Tōkai and gave him a base for his later advance on Kyoto.

    Sources[10][11]

Sengoku–Azuchi-Momoyama1568–1600 · 13 events

Wars of unification, castles and markets, Christianity, and the invasions of Korea.

  1. Nobunaga enters Kyoto with Ashikaga Yoshiaki

    • Politics and institutions
    • War and conflict

    Region: Kinki, Chūbu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Oda Nobunaga installed Ashikaga Yoshiaki as shogun and intervened in Kyoto politics, advancing wars over lords, temples, and cities in the Kinai.

    Sources[10][11]

  2. Oda forces attack Mount Hiei

    • War and conflict
    • Belief and ritual
    • Politics and institutions

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Nobunaga’s army attacked and burned Enryakuji and its surroundings, killing many clergy and laypeople; religious institutions were active powers in the wars of unification, not passive backdrops.

    Sources[10][11]

  3. The Muromachi shogunate ends

    • Politics and institutions
    • War and conflict

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Nobunaga expelled Shogun Ashikaga Yoshiaki from Kyoto, ending Ashikaga government there, although Yoshiaki retained his title and contacts with anti-Nobunaga forces.

    Sources[10][11]

  4. The Oda-Tokugawa alliance wins at Nagashino-Shitaragahara

    • War and conflict
    • Science and technology
    • Politics and institutions

    Region: Chūbu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Oda-Tokugawa alliance defeated Takeda forces in a battle noted for combining firearms with field fortifications, while the familiar story of regimented three-rank volleys contains later embellishment.

    Caveat: The precise organization of firearm tactics remains debated in the sources.

    Sources[10][11]

  5. Azuchi Castle and its town are built

    • Politics and institutions
    • Economy
    • Culture

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Azuchi Castle and its town commanded the routes across Lake Biwa. They joined monumental display, open-market policies, and long-distance trade, making the power of unification something people could see.

    Sources[10]

  6. Nobunaga dies in the Honnōji Incident

    • Politics and institutions
    • War and conflict

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Akechi Mitsuhide’s surprise attack forced Oda Nobunaga to die at Honnōji; Hashiba Hideyoshi then defeated Mitsuhide and gained the advantage in the struggle to inherit Oda power.

    Sources[10][11]

  7. Toyotomi Hideyoshi becomes kampaku

    • Politics and institutions
    • Society and life

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Hideyoshi became imperial regent and received the Toyotomi name, combining military power with court office to advance nationwide integration.

    Sources[10][11]

  8. The Kyushu campaign is followed by the anti-missionary edict

    • Politics and institutions
    • War and conflict
    • Belief and ritual
    • Diplomacy and exchange

    Region: Kyushu, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After subduing the Shimazu, Hideyoshi ordered missionaries to leave Japan, but overseas trade and individual Christian practice did not immediately cease, and enforcement varied.

    Sources[10][11]

  9. Hideyoshi issues the Sword Hunt Edict

    • Politics and institutions
    • Society and life
    • War and conflict

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Hideyoshi ordered weapons collected from cultivators and, together with cadastral surveys, advanced status separation, though civilian weapon possession did not disappear at once.

    Sources[10][11]

  10. Odawara campaign completes military unification

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Kantō, Tōhoku, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Hideyoshi destroyed the Later Hōjō and confirmed northern lords’ holdings, bringing the major domains of the archipelago into Toyotomi systems of landholding and military service.

    Sources[10][11]

  11. The Toyotomi regime invades Korea

    • War and conflict
    • Diplomacy and exchange
    • Society and life

    Region: Kyushu, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Hideyoshi sent large invasion armies to Korea in 1592 and 1597. Korean and Ming resistance and failed negotiations prolonged the war, bringing immense killing, destruction, and forced removals to the peninsula.

    Sources[10][11]

  12. Hideyoshi dies and Japanese forces withdraw

    • Politics and institutions
    • War and conflict
    • Diplomacy and exchange

    Region: Kinki, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After Hideyoshi’s death, the councils of elders and commissioners withdrew forces from Korea, while the balance meant to support the child Hideyori rapidly fractured.

    Sources[10][11]

  13. Tokugawa Ieyasu’s coalition wins at Sekigahara

    • Politics and institutions
    • War and conflict

    Region: Chūbu, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Tokugawa Ieyasu’s coalition defeated the western army associated with Ishida Mitsunari, and the ensuing confiscations and transfers gave Ieyasu command over the domain map.

    Sources[10][11]

Edo1603–1853 · 23 events

The shogunate-domain order, four diplomatic gateways, cities, trade and distribution, learning, and disaster.

  1. The Edo shogunate is established

    • Politics and institutions
    • Society and life

    Region: Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Tokugawa Ieyasu became shogun and built from Edo the framework of a shogunate-domain order in which central and domain governments coexisted.

    Sources[12][11]

  2. Satsuma invades the Ryukyu Kingdom

    • War and conflict
    • Politics and institutions
    • Diplomacy and exchange
    • Economy

    Region: Kyushu, Ryukyu and Okinawa, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Shimazu forces invaded Ryukyu and forced King Shō Nei to submit; the kingdom then retained tributary relations with Ming and Qing China while also facing Satsuma control and extraction.

    Sources[12][11]

  3. The shogunate ends the Toyotomi house and issues Laws for the Military Houses

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate destroyed the Toyotomi house at Osaka and issued Laws for the Military Houses regulating domains’ castles, marriages, and political conduct.

    Sources[12][11]

  4. Alternate attendance and maritime controls are codified

    • Politics and institutions
    • Economy
    • Diplomacy and exchange

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate codified lords’ alternate attendance and reinforced bans on Japanese overseas travel and return, selectively controlling mobility rather than ending all exchange.

    Sources[12][11]

  5. The Shimabara-Amakusa uprising breaks out

    • War and conflict
    • Belief and ritual
    • Society and life
    • Economy

    Region: Kyushu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Peasants and masterless warriors, many of them Christian, rebelled amid severe taxation and lordly abuse; after crushing Hara Castle and killing large numbers, the shogunate tightened religious control.

    Sources[12][11]

  6. Portuguese ships are barred

    • Diplomacy and exchange
    • Belief and ritual
    • Economy

    Region: Kyushu, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate barred Portuguese ships amid Christian prohibition and suspicion of Iberian powers, while connections with China, Korea, Ryukyu, Ainu communities, and the Dutch continued.

    Sources[12]

  7. Four gateways manage exchange under the so-called sakoku system

    • Diplomacy and exchange
    • Economy
    • Culture

    Region: Kyushu, Ryukyu and Okinawa, Hokkaido, East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After the Dutch factory moved to Dejima, diplomacy, trade, and knowledge were managed through four gateways: Chinese and Dutch exchange at Nagasaki, Korea via Tsushima, Ryukyu under Satsuma, and Ainu trade through Matsumae. This was not complete international isolation.

    Sources[12]

  8. The Great Fire of Meireki burns most of Edo

    • Environment and disaster
    • Society and life
    • Politics and institutions

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The fire burned most of Edo and killed many people; reconstruction widened roads, created firebreak spaces, and relocated temples as urban disaster planning became more systematic.

    Sources[13][14]

  9. Shakushain’s coalition fights the Matsumae domain

    • War and conflict
    • Economy
    • Society and life
    • Politics and institutions

    Region: Hokkaido

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Against a background of trade terms and regional rivalries, an Ainu coalition led by Shakushain fought the Matsumae domain. After its defeat, Matsumae control over trade tightened further.

    Sources[12]

  10. Tsunayoshi issues edicts protecting living things

    • Politics and institutions
    • Society and life
    • Belief and ritual

    Region: Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Tsunayoshi’s government repeatedly ordered protection for humans and animals. The measures covered abandoned children and the sick, and also imposed heavy burdens, including the impounding of dogs on a large scale.

    Sources[13][11]

  11. Urban culture and a commercial economy mature

    • Culture
    • Economy
    • Society and life

    Region: Kantō, Kinki, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Publishing, kabuki, puppet theater, and popular fiction flourished around Kamigata (the Kyoto-Osaka region) and Edo, supported by trade and finance that linked the three great cities with regional markets.

    Sources[12]

  12. The Hōei earthquake is followed by an eruption of Mount Fuji

    • Environment and disaster
    • Society and life
    • Economy
    • Science and technology

    Region: Kantō, Chūbu, Kinki, Shikoku

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    A great Nankai Trough earthquake and tsunami was followed forty-nine days later by a Fuji eruption, causing widespread destruction and prolonged agricultural and river damage from ashfall.

    Sources[13][14]

  13. Yoshimune launches the Kyōhō Reforms

    • Politics and institutions
    • Economy
    • Society and life
    • Science and technology

    Region: Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Yoshimune’s government pursued fiscal recovery through higher rice revenues and new fields while introducing petition boxes, the Koishikawa clinic, and relaxed import rules for non-Christian Western books.

    Sources[13][11]

  14. The Kyōhō famine spreads

    • Environment and disaster
    • Society and life
    • Economy

    Region: Chūgoku, Shikoku, Kyushu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Cool weather and planthopper damage devastated rice crops, especially in western Japan. Hunger and price spikes spread, and famine relief and sweet-potato cultivation moved onto the policy agenda.

    Sources[13][14]

  15. Kaitai Shinsho is published

    • Science and technology
    • Culture
    • Diplomacy and exchange

    Region: Kantō, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Sugita Genpaku, Maeno Ryōtaku, and collaborators translated a Dutch anatomy book, advancing rangaku (Dutch learning) and medical knowledge through observation and the creation of new terminology.

    Sources[12][11]

  16. The Tenmei famine deepens as Mount Asama erupts

    • Environment and disaster
    • Society and life
    • Economy
    • Science and technology

    Region: Tōhoku, Kantō, Japanese archipelago

    ClaimScientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Cold-weather crop failures, the 1783 Asama eruption, and unequal systems of storage, distribution, and domain relief combined to cause mass hunger, disease, and migration, especially in Tōhoku.

    Sources[13][14]

  17. Matsudaira Sadanobu launches the Kansei Reforms

    • Politics and institutions
    • Economy
    • Culture
    • Society and life

    Region: Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Matsudaira Sadanobu promoted famine reserves, rural recovery, and debt relief for shogunal retainers while privileging Zhu Xi learning and regulating publishing and popular culture.

    Sources[13][11]

  18. The Laxman mission reaches Nemuro

    • Diplomacy and exchange
    • Economy
    • Politics and institutions

    Region: Hokkaido, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Russian envoy Adam Laxman returned castaways and requested trade; the shogunate issued a permit to enter Nagasaki and increasingly treated northern defense and Russian diplomacy as concrete concerns.

    Sources[12][11]

  19. Inō Tadataka surveys Japan

    • Science and technology
    • Politics and institutions
    • Environment and disaster

    Region: Japanese archipelago, Hokkaido

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Inō Tadataka and surveying teams measured routes from Ezo to Kyushu and assembled the observations behind highly accurate coastal maps, completed after Inō’s death.

    Sources[12][11]

  20. The Phaeton Incident exposes weaknesses in port defenses

    • Diplomacy and exchange
    • War and conflict
    • Politics and institutions

    Region: Kyushu, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The British warship Phaeton entered Nagasaki under a false Dutch flag and seized hostages. The incident exposed weaknesses in port defenses and the reach of European wars into East Asia.

    Sources[12][11]

  21. The shogunate issues the Edict to Repel Foreign Vessels

    • Diplomacy and exchange
    • War and conflict
    • Politics and institutions

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate ordered domains to drive away ships other than authorized Chinese, Korean, Ryukyuan, and Dutch vessels. With that, fear of foreign ships became a nationwide coastal-defense policy.

    Sources[12][11]

  22. The Tenpō famine spreads

    • Environment and disaster
    • Society and life
    • Economy

    Region: Tōhoku, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Repeated cold-weather failures, floods, and poor harvests met inadequate reserves and relief and soaring rice prices. Hunger and epidemics spread, people fled the villages, and urban riots broke out.

    Sources[13][14]

  23. Ōshio Heihachirō rebels in Osaka

    • Society and life
    • War and conflict
    • Politics and institutions
    • Economy

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Former magistrate’s officer Ōshio Heihachirō rebelled against Osaka officials and wealthy merchants who failed to relieve famine suffering. The revolt was quickly crushed, but it revealed distrust in shogunal urban rule.

    Sources[13][11]

Bakumatsu–Restoration1853–1868 · 10 events

Opening ports, treaty politics, civil war, and competing visions of a new government.

  1. Perry’s squadron arrives at Uraga

    • Diplomacy and exchange
    • War and conflict
    • Politics and institutions

    Region: Kantō, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Commodore Matthew Perry arrived with steam warships and demanded open ports. The shogunate then sought opinions from the domains and the court, weakening its own monopoly over foreign policy.

    Sources[11][17]

  2. The shogunate signs the Convention of Kanagawa

    • Diplomacy and exchange
    • Politics and institutions
    • Economy

    Region: Kantō, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate signed a convention with the United States, opening Shimoda and Hakodate for supplies and providing for castaways, and entered a wider treaty system with Western powers.

    Sources[11][17]

  3. The shogunate signs the Ansei commercial treaties

    • Diplomacy and exchange
    • Politics and institutions
    • Economy

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The shogunate signed commercial treaties with the United States, Netherlands, Russia, Britain, and France, accepting open ports, consular jurisdiction, and negotiated tariffs. Signing without imperial sanction intensified domestic conflict.

    Sources[11][17]

  4. Ii Naosuke is assassinated outside Sakurada Gate

    • Politics and institutions
    • War and conflict

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Rōnin from Mito and allies assassinated chief minister Ii Naosuke outside Sakurada Gate; the death of the official who had led the Ansei Purge severely weakened shogunal authority.

    Sources[11][17]

  5. Satsuma retainers attack British travelers at Namamugi

    • Diplomacy and exchange
    • War and conflict
    • Society and life

    Region: Kantō, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Satsuma retainers killed and wounded British travelers who crossed a daimyō procession, and the failed compensation dispute escalated into the Anglo-Satsuma War the following year.

    Sources[11][17]

  6. Expulsion campaigns spread and Satsuma fights a British squadron

    • Diplomacy and exchange
    • War and conflict
    • Politics and institutions

    Region: Kyushu, Chūgoku, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Chōshū fired on foreign shipping in the Shimonoseki Strait while Satsuma fought a British squadron; clashes with Western military power pushed both domains to transform their arms and diplomacy.

    Sources[11][17]

  7. Domestic and foreign wars converge on Chōshū

    • War and conflict
    • Politics and institutions
    • Diplomacy and exchange

    Region: Kinki, Chūgoku, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Defeat at the Kinmon Gate made Chōshū an enemy of the court. Bombardment by a four-power fleet and the shogunate’s first punitive expedition then drove a major political reversal inside the domain.

    Sources[11][17]

  8. Satsuma and Chōshū align as the second Chōshū campaign fails

    • Politics and institutions
    • War and conflict

    Region: Kyushu, Chūgoku, Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Satsuma and Chōshū advanced a military and political partnership, and the shogunate’s failed second campaign against Chōshū decisively damaged its military prestige.

    Sources[11][17]

  9. Yoshinobu returns governing authority and imperial restoration is proclaimed

    • Politics and institutions
    • War and conflict

    Region: Kinki, Kantō, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After Tokugawa Yoshinobu offered to return governing authority, anti-shogunate leaders proclaimed imperial restoration and abolished shogunal offices; conflict over the new distribution of power moved toward civil war.

    Sources[11][16][17]

  10. The Boshin War is fought as the Meiji government takes shape

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Kinki, Kantō, Tōhoku, Hokkaido, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Civil war between the new government and former shogunal forces spread from Toba-Fushimi to Tōhoku and Hakodate, while the government issued the Charter Oath, renamed Edo Tokyo, and began building new institutions.

    Sources[16][17]

Meiji1868–1912 · 17 events

Nation-state building, industrialization, empire, and the inclusion and exclusion these processes produced.

  1. The new government issues the Charter Oath

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After the restoration of imperial rule, the new government issued the Charter Oath and began rebuilding the machinery of government while fighting the Boshin War.

    Sources[16][15]

  2. Ezo is renamed Hokkaido and a Development Commission is created

    • Politics and institutions
    • Society and life
    • Environment and disaster

    Region: Hokkaido

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The government renamed Ezo as Hokkaido and created the Development Commission, which promoted settlement and resource development. The same process brought Ainu land, livelihoods, and culture under state institutions.

    Caveat: Scholars also analyze this process as colonization and assimilation, not simply as “development.”

    Sources[15][16]

  3. The domains are abolished

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The government abolished the domains and established prefectures. Territorial rule by former daimyō gave way to local administrations appointed by the central state.

    Sources[16][15]

  4. Outcaste status labels are abolished

    • Society and life
    • Politics and institutions

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A Council of State proclamation abolished outcaste labels and formal status distinctions. Discrimination in landholding, work, marriage, and everyday life persisted, and later became a focus of Buraku liberation movements.

    Sources[15][16]

  5. A national school system is promulgated

    • Society and life
    • Culture
    • Politics and institutions

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The government promulgated a national school system. Enrollment rose unevenly and gradually, amid resistance over fees and the loss of children’s household labor.

    Sources[16][15]

  6. The Ryukyu Disposition ends the kingdom and creates Okinawa Prefecture

    • Politics and institutions
    • Diplomacy and exchange
    • Society and life

    Region: Ryukyu and Okinawa, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After creating a Ryukyu Domain, the government abolished the Ryukyu Kingdom and established Okinawa Prefecture in 1879. This integrated the islands into the modern state while forcibly ending a distinct kingdom and its external relations.

    Sources[15][16]

  7. The land tax is reformed

    • Economy
    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A land tax assessed on land value and paid in cash by titled landowners gave the state stable revenue. It also provoked rural opposition, since fixed payments fell due even after poor harvests.

    Sources[16][15]

  8. The Conscription Ordinance imposes military service

    • Politics and institutions
    • War and conflict
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The government imposed military service in principle on adult men, shifting from status-based forces toward a national army. Exemptions and regional disparities remained, and anti-conscription uprisings occurred.

    Sources[16][15]

  9. The Freedom and People’s Rights Movement demands a parliament

    • Politics and institutions
    • Society and life
    • Culture

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Beginning with the Petition for an Elected Assembly, associations and public meetings across Japan demanded a parliament, a constitution, and rights, and drafted private constitutions. The state responded through both repression and institution-building.

    Sources[16][15]

  10. Former samurai rise in the Satsuma Rebellion

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: Kyushu

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Former samurai forces in Kagoshima rallied around Takamori Saigō and fought the government army. The government’s victory brought large-scale armed resistance by former samurai toward its end.

    Sources[16][15]

  11. The cabinet system is established

    • Politics and institutions

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The cabinet system replaced the Council of State, and Hirobumi Itō became Japan’s first prime minister.

    Sources[23][16]

  12. The Meiji Constitution is promulgated

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Meiji Constitution established a constitutional framework of imperial sovereignty, subject rights, an Imperial Diet, and ministers of state. Rights were guaranteed only within limits set by law.

    Sources[16][15]

  13. The first Imperial Diet convenes

    • Politics and institutions
    • Society and life
    • Culture

    Region: Japanese archipelago

    Claim 1Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The first Imperial Diet convened, and an elected House of Representatives entered national government. The franchise, however, was limited to men who paid a specified amount of tax.

    Sources[16][15]

    Claim 2Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Imperial Rescript on Education issued that year placed filial piety and loyalty to the state at the center of official moral education.

    Sources[16][15]

  14. Ashio copper pollution damages the Watarase valley

    • Environment and disaster
    • Economy
    • Society and life
    • Politics and institutions

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Pollution from the Ashio Copper Mine damaged farming, fishing, and daily life along the Watarase River. Shōzō Tanaka and affected residents demanded relief and regulation, and the case became a landmark in Japan’s pollution history.

    Sources[15][16]

  15. The Sino-Japanese War brings Taiwan under colonial rule

    • War and conflict
    • Diplomacy and exchange
    • Politics and institutions
    • Society and life

    Region: East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan and Qing China fought over competing interests in Korea. Under the Treaty of Shimonoseki, Qing ceded Taiwan and the Penghu Islands to Japan, and Japanese colonial rule there lasted until 1945.

    Sources[17][16][15]

  16. Japan and Russia go to war

    • War and conflict
    • Diplomacy and exchange
    • Politics and institutions

    Region: East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan and Russia fought over Manchuria and Korea, inflicting heavy casualties on both sides. The peace settlement gave Japan southern Sakhalin and interests in southern Manchuria and strengthened its domination of Korea.

    Sources[17][16][15]

  17. Japan annexes Korea

    • Politics and institutions
    • Diplomacy and exchange
    • Society and life

    Region: East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan put the annexation treaty into effect and ruled Korea as a colony until 1945. Colonial rule restricted political rights, intervened in land, education, and culture, and repressed resistance.

    Sources[17][15]

Taishō1912–1926 · 10 events

Mass politics, social movements, imperial rule, and urban catastrophe.

  1. The First Movement to Protect Constitutional Government forces a cabinet out

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Parties, newspapers, and citizens rallied to “protect constitutional government” against oligarchic politics and forced the Katsura cabinet to resign. Popular participation in politics had proved strong enough to move a government.

    Sources[16][15][23]

  2. World War I brings Japan a wartime boom

    • War and conflict
    • Diplomacy and exchange
    • Economy

    Region: East Asia, World, Japanese archipelago

    Claim 1Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan entered the war on the Allied side and occupied German possessions in China and the Pacific. Exports and heavy industry expanded as European supplies fell, while prices also surged.

    Sources[17][16][15]

    Claim 2Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    In 1915 Japan pressed the Twenty-One Demands on China, provoking opposition in China and concern abroad.

    Sources[17]

  3. The Factory Act takes effect

    • Society and life
    • Economy
    • Politics and institutions

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Factory Act enacted in 1911 took effect. It set Japan’s first nationwide limits on hours and night work for women and minors, along with rules for factory safety, though coverage and protections remained narrow.

    Sources[16][15]

  4. The Rice Riots spread across Japan

    • Society and life
    • Economy
    • Politics and institutions

    Region: Chūbu, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Protests against soaring rice prices spread from Toyama across Japan and drew urban residents, workers, fishers, and farmers. The unrest contributed to the resignation of the Terauchi cabinet.

    Sources[16][15][23]

  5. Takashi Hara forms a party cabinet

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Takashi Hara led the Seiyūkai, whose base lay in the House of Representatives. He became prime minister and formed a cabinet built on a political party, though suffrage remained restricted.

    Sources[23][16]

  6. The March First Movement is suppressed under colonial rule

    • Society and life
    • Politics and institutions
    • War and conflict

    Region: East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Large, largely nonviolent demonstrations for independence spread across Korea. Japanese colonial authorities suppressed them with military and police force, causing many deaths, injuries, and arrests.

    Caveat: Casualty figures vary by source and by how they are counted, but the violent suppression carried out by the colonial authorities is not in doubt.

    Sources[17][15]

  7. Japan joins the League of Nations

    • Diplomacy and exchange
    • Politics and institutions

    Region: World, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan became a founding member and permanent Council member of the League of Nations and administered former German Pacific islands under mandate. Participation in international cooperation and imperial governance advanced together.

    Sources[17][16]

  8. Women gain access to political meetings

    • Society and life
    • Politics and institutions

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After campaigning by the New Women’s Association and others, Article 5 of the Public Peace Police Law was amended so women could organize and attend political meetings. Party membership and national voting rights remained barred.

    Sources[15][16]

  9. The Great Kantō Earthquake is followed by massacres

    • Environment and disaster
    • Society and life
    • War and conflict

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Earthquake and fire devastated Tokyo, Yokohama, and surrounding areas. Amid rumors and discrimination, vigilantes and members of the military and police killed Koreans, Chinese people, and Japanese socialists.

    Caveat: Estimates of the total number killed vary, but records establish that massacres occurred and that state agents were involved.

    Sources[15][16]

  10. Universal male suffrage arrives with the Peace Preservation Law

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Universal Manhood Suffrage Law removed tax qualifications and enfranchised men aged 25 and over. The same year, the Peace Preservation Law criminalized efforts to alter the kokutai, the national polity, or to abolish private property.

    Caveat: It was a turning point in which electoral expansion accompanied repression of thought and association; women were still excluded from the franchise.

    Sources[16][15]

Shōwa, war years1926–1945 · 15 events

The Depression, militarization, colonial rule, total war, defeat, and both victimhood and responsibility.

  1. Bank runs trigger the Shōwa financial crisis

    • Economy
    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A Diet statement about bank instability triggered spreading runs and the closure of many banks. The government and Bank of Japan responded with a payments moratorium and emergency lending.

    Sources[16][15]

  2. The first universal male election is followed by the March 15 Incident

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan held its first House election under universal male suffrage, while on March 15 the government carried out nationwide arrests of Communist Party members and labor and social activists.

    Sources[16][15]

  3. The Great Depression deepens into the Shōwa Depression

    • Economy
    • Society and life
    • Politics and institutions

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The global depression and deflation following the return to gold drove down exports and prices, bringing especially severe hardship to rural communities dependent on raw-silk production.

    Sources[22][16][15]

  4. The Manchurian Incident begins the occupation of northeast China

    • War and conflict
    • Politics and institutions
    • Diplomacy and exchange

    Region: East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Kwantung Army used the railway explosion at Liutiaohu as a pretext to expand military operations and occupy northeast China. The government ratified the field army’s actions, and the aggression became an accomplished fact.

    Sources[17][16][19]

  5. Manchukuo is founded and Inukai is assassinated in the May 15 Incident

    • Politics and institutions
    • War and conflict
    • Diplomacy and exchange

    Region: East Asia, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Manchukuo was founded under Japanese military control, and other states widely regarded it as a Japanese puppet state. That year naval officers assassinated Prime Minister Tsuyoshi Inukai, and the succession of party cabinets came to an end.

    Sources[17][16][23][19]

  6. Japan withdraws from the League of Nations

    • Diplomacy and exchange
    • Politics and institutions
    • War and conflict

    Region: World, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After the League Assembly adopted recommendations refusing to recognize Manchukuo, Japan announced its withdrawal. The withdrawal took effect in 1935 and symbolized a retreat from international cooperation.

    Sources[17][16]

  7. Young officers revolt in the February 26 Incident

    • Politics and institutions
    • War and conflict

    Region: Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Young army officers attacked government sites in Tokyo, killed senior officials, and occupied part of the capital. The revolt was suppressed, but military influence over subsequent politics grew further.

    Caveat: The incident should be read as one episode in a longer institutional and social process, not as the sole cause of military ascendancy.

    Sources[16][23][19]

  8. Full-scale war spreads in China and the Nanjing Massacre follows

    • War and conflict
    • Politics and institutions
    • Society and life

    Region: East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After the Marco Polo Bridge Incident, Japan expanded to full-scale war in China. During and after the capture of Nanjing, Japanese forces killed prisoners of war and civilians on a large scale and committed sexual violence and looting.

    Caveat: Estimates of the death toll vary, but the occurrence of mass killing and grave war crimes is firmly established.

    Sources[17][19]

  9. The National Mobilization Law is enacted

    • Politics and institutions
    • Economy
    • Society and life
    • War and conflict

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    For the prosecution of war, the government gained broad power to control labor, materials, prices, and the press by imperial ordinance. Society and the economy were reorganized for total war.

    Sources[16][17][19]

  10. Labor mobilization intensifies across Japan’s empire

    • Society and life
    • Economy
    • War and conflict
    • Politics and institutions

    Region: Japanese archipelago, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Measures including the National Requisition Ordinance intensified state labor mobilization. Large numbers of people from Korea and other colonies were sent to Japan and war zones through recruitment, official placement, and conscription, many under coercive and harsh conditions.

    Caveat: Legal category, timing, and working conditions differed by place and by person. Judgments have to rest on case-specific records.

    Sources[17][19]

  11. The Imperial Rule Assistance Association forms as Japan signs the Tripartite Pact

    • Politics and institutions
    • Diplomacy and exchange
    • War and conflict
    • Society and life

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    At home, the Imperial Rule Assistance Association absorbed established parties and organized wartime mobilization. Abroad, the Tripartite Pact aligned Japan more explicitly with Germany and Italy.

    Sources[16][17][19]

  12. The Asia-Pacific War expands

    • War and conflict
    • Diplomacy and exchange
    • Society and life

    Region: East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan attacked Hawaii, Malaya, and other targets and entered war with the United States, Britain, and their allies, expanding occupation across Southeast Asia and the Pacific. Japanese rule brought killings, forced mobilization, and resource extraction in many areas.

    Sources[17][16][19]

  13. Total war reshapes daily life as the military “comfort women” system operates

    • Society and life
    • War and conflict
    • Politics and institutions

    Region: Japanese archipelago, East Asia, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Rationing, labor mobilization, student mobilization, and evacuation reshaped daily life. Under the Japanese military’s “comfort station” system, women from Japan’s colonies, occupied territories, and elsewhere were compelled to provide sexual services against their will.

    Caveat: The total number of victims and every route of recruitment remain unresolved, but official records and testimony establish the system, military involvement, and grave violations of women’s rights.

    Sources[17][19]

  14. Urban air raids intensify and the Battle of Okinawa is fought

    • War and conflict
    • Society and life

    Region: Kantō, Ryukyu and Okinawa, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    U.S. incendiary raids killed large numbers of civilians in Tokyo and other cities. In Okinawa, ground warfare caused enormous losses among residents as well as combatants; Japanese military mobilization, expulsion from shelters, and coercion or pressure toward group suicide compounded civilian suffering.

    Caveat: How much was lost in each locality, and what forms coercion took, become clear only by comparing local records with testimony.

    Sources[17][16][19]

  15. Atomic bombings and Soviet entry are followed by Japan’s surrender

    • War and conflict
    • Diplomacy and exchange
    • Society and life

    Region: Chūgoku, Kyushu, East Asia, World

    Claim 1Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The United States dropped atomic bombs on Hiroshima and Nagasaki, inflicting catastrophic harm primarily on civilians. The Soviet Union entered the war against Japan; Japan announced acceptance of surrender on August 15 and signed the instrument on September 2.

    Sources[17][16][19]

    Claim 2Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan’s defeat ended its war of aggression and colonial empire, while the effects of wartime destruction, repatriation, internment, and division continued long afterward.

    Sources[17][19]

Shōwa, postwar1945–1989 · 14 events

Occupation reforms, restored sovereignty, high growth, social movements, and Okinawa’s reversion.

  1. Occupation brings postwar reforms

    • Politics and institutions
    • Society and life
    • Economy
    • War and conflict

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan was occupied under the Supreme Commander for the Allied Powers. The military was dismantled, and land reform, legal recognition of unions, and the breakup of the zaibatsu financial combines went forward. The International Military Tribunal for the Far East put senior leaders on trial over responsibility for the war.

    Caveat: Reforms did not come from occupation directives alone. They took shape as those directives met Japanese proposals, social movements, and institutional practice.

    Sources[18][19][16]

  2. Women gain the vote

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A 1945 revision of the House election law granted women the right to vote and stand for national office. Women voted for the first time in the April 1946 general election, in which 39 women were elected.

    Sources[18][16][19]

  3. The Constitution of Japan is promulgated and takes effect

    • Politics and institutions
    • Society and life
    • War and conflict

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Constitution of Japan was promulgated and took effect the following year, grounded in popular sovereignty, respect for fundamental human rights, and renunciation of war. The emperor became “the symbol of the State and of the unity of the people.”

    Sources[18][21][16]

  4. Postwar social institutions are put in place

    • Society and life
    • Politics and institutions
    • Economy

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Fundamental Law of Education, School Education Law, Local Autonomy Law, and Labor Standards Law took effect. These statutes established coeducation, the 6-3-3-4 school structure, local self-government, and minimum labor standards.

    Sources[16][19]

  5. Japan signs the San Francisco Peace Treaty and U.S.-Japan Security Treaty

    • Diplomacy and exchange
    • Politics and institutions
    • War and conflict

    Region: Japanese archipelago, World, East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan signed a peace treaty with many Allied powers and, the same day, a security treaty with the United States. The Cold War framework that followed rested on restored sovereignty and a continuing U.S. military presence.

    Sources[20][16][17]

  6. Japan regains sovereignty as Okinawa remains under separate rule

    • Politics and institutions
    • Diplomacy and exchange
    • Society and life

    Region: Japanese archipelago, Ryukyu and Okinawa

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The peace treaty ended the occupation and restored Japan’s sovereignty. Okinawa, Amami, and Ogasawara remained under U.S. administration, and disputes over base burdens and residents’ rights continued.

    Sources[20][16][19]

  7. The 1955 System takes shape

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Conservative parties merged to form the Liberal Democratic Party, facing a reunified Japan Socialist Party. The resulting LDP-centered governing structure lasted until 1993.

    Sources[23][20][19]

  8. Pollution diseases prompt environmental governance

    • Environment and disaster
    • Society and life
    • Economy
    • Politics and institutions

    Region: Kyushu, Chūbu, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Industrial pollution, including Minamata disease, became severe across Japan, and delayed corporate and government action magnified the harm. Victims’ campaigns and lawsuits advanced findings of responsibility and helped drive the so-called Pollution Diet and the creation of the Environment Agency.

    Sources[20][19][22]

  9. Japan is admitted to the United Nations

    • Diplomacy and exchange
    • Politics and institutions

    Region: World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    After the Soviet-Japanese Joint Declaration ended the state of war between the two countries, Japan was admitted to the United Nations and advanced its institutional return to international society.

    Sources[20][16][17]

  10. The revised security treaty provokes the Anpo protests

    • Politics and institutions
    • Diplomacy and exchange
    • Society and life

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Students, labor unions, and citizens mounted mass protests against revision of the U.S.-Japan Security Treaty. The treaty entered into force, but the Kishi cabinet resigned.

    Sources[20][16][23][19]

  11. The Tōkaidō Shinkansen opens as Tokyo hosts the Olympics

    • Economy
    • Science and technology
    • Culture
    • Society and life

    Region: Kantō, Chūbu, Kinki, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Tōkaidō Shinkansen opened and Tokyo hosted the Olympics. The two events displayed new transport and urban infrastructure and Japan’s return to the international stage. They also brought rapid urbanization and regional disparities into view.

    Caveat: Calling 1964 the “completion of recovery” is a symbolic interpretation; the pace of improved living standards differed by region and class.

    Sources[20][22][19]

  12. Japan and South Korea conclude the Treaty on Basic Relations

    • Diplomacy and exchange
    • Politics and institutions
    • Society and life

    Region: East Asia

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Japan and South Korea normalized diplomatic relations and concluded an agreement on claims and economic cooperation. The meaning of colonial rule and remedies for individual victims remained contested in both societies.

    Sources[17][20][16]

  13. Okinawa reverts to Japan and relations with China are normalized

    • Diplomacy and exchange
    • Politics and institutions
    • Society and life

    Region: Ryukyu and Okinawa, East Asia, Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Administrative authority over Okinawa reverted to Japan in May, and the September Joint Communique normalized relations with the People’s Republic of China. A disproportionate concentration of U.S. bases remained in Okinawa after reversion.

    Sources[20][16][17]

  14. The oil shock gives way to stable growth and an asset bubble

    • Economy
    • Society and life
    • Environment and disaster

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The 1973 oil shock drove inflation and energy conservation and ended the high-growth era. Stable growth and industrial restructuring followed, before stock and land prices surged in the late 1980s.

    Caveat: These growth labels are conventional economic-period categories; effects differed across industries, regions, and households.

    Sources[22][20][19]

Heisei1989–2019 · 4 events

The post-bubble economy, political realignment, major disasters, and demographic change.

  1. The asset bubble collapses

    • Economy
    • Society and life
    • Politics and institutions

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    Sharp falls in stock and land prices burst the asset bubble, leading into prolonged stagnation marked by nonperforming loans, financial instability, and changing employment practices.

    Caveat: Economic historians differ over the periodization of the stagnation and the relative weight of its causes.

    Sources[22]

  2. The Great Hanshin-Awaji Earthquake strikes

    • Environment and disaster
    • Society and life
    • Politics and institutions

    Region: Kinki

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The southern Hyōgo earthquake caused severe loss of life and building damage across an urban region. It prompted a reassessment of emergency response, disaster planning, seismic standards, and volunteer relief.

    Sources[22]

  3. A general election changes the government

    • Politics and institutions
    • Society and life

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Democratic Party of Japan won an outright majority in the House election and formed the Hatoyama cabinet. Governing power passed in full to what had been the largest opposition party.

    Sources[23]

  4. The Great East Japan Earthquake triggers the Fukushima nuclear disaster

    • Environment and disaster
    • Science and technology
    • Society and life
    • Politics and institutions

    Region: Tōhoku, Kantō

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    A massive earthquake and tsunami devastated the Pacific coast of Tōhoku, and the Fukushima Daiichi nuclear plant suffered core damage and radioactive releases. Long-term displacement, reconstruction, and decommissioning followed.

    Sources[22]

Reiwa2019–present · 2 events

Contemporary history, including institutional succession and the pandemic, with provisional judgments marked as such.

  1. The Reiwa era begins amid population decline and aging

    • Society and life
    • Economy
    • Politics and institutions

    Region: Japanese archipelago

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The Reiwa era began amid continuing population decline, aging, and uneven regional distribution. Social security, labor supply, local transport, housing, and infrastructure maintenance became a single, tangled policy problem.

    Caveat: Population decline began before Reiwa; its future scale and effects depend on policy, migration, and changes in births and deaths.

    Sources[22]

  2. Japan responds to the COVID-19 pandemic

    • Science and technology
    • Society and life
    • Economy
    • Politics and institutions

    Region: Japanese archipelago, World

    ClaimHistorical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    In response to COVID-19, the government used states of emergency, border controls, vaccination, and adjustments to medical provision. The disease moved to Category V under Japan’s infectious-disease framework in May 2023.

    Caveat: Long-term effects on health, education, work, and isolation, together with assessments of the policy response, will go on being rewritten as contemporary history.

    Sources[24][22]

Jōmon, Yayoi, Kofun: how to read change in ritual

Similar forms do not prove institutional continuity. HIMOROGI places material evidence, research hypotheses, and later records in parallel, so both continuity and rupture remain visible.

Three periods across three evidence types

The upper row shows what kind of evidence supports a statement; the lower row shows what can be observed in each period. Horizontal placement enables comparison and does not imply simple evolution or direct inheritance.

Three evidence types

  1. 1Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Record placement, wear, breakage, and deposition

  2. 2Leading Hypothesis: A research- or interpretation-level hypothesis, not yet the established consensus, and subject to revision

    Compare models of ritual, power, and exchange

  3. 3Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The chronicles also document their own age of compilation

Compare the breaks as well as the continuities

  1. Jōmon: living places and ritual places

    • Early–Middle JōmonSettlements organize dwellings, graves, storage, and discard
    • Middle–Final JōmonBroken dogu preserve action, not divine names
    • Late JōmonBurial, communal labor, and landscape meet at stone circles

  2. Yayoi: paddies, bronzes, and emerging polities

    • from c. 10th century BCEPaddies and canals reorganize collective labor
    • from c. 5th century BCEFrom practical metalwork to monumental ritual objects
    • 2nd century BCE–3rd century CEMoats, large buildings, and cemeteries make authority visible

  3. Kofun: the dead, authority, and archipelago networks

    • mid-3rd centuryA shared keyhole-tomb form
    • 3rd–6th centuriesHaniwa structure the space atop tombs
    • 5th–6th centuriesHuman movement changes technology and ritual

1

Read the evidence in three distinct layers

Keep material evidence, scholarly interpretation, and later texts separate

Periods without contemporary writing cannot be explained simply by projecting later divine names or stories backward. This model separates archaeologically observable practice, scholarly interpretation, and narratives compiled from the eighth century onward.

  1. 1 · Contemporary material evidence

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Record placement, wear, breakage, and deposition

    For dwellings, burials, pottery, dogu figurines, bronzes, tombs, and haniwa, findspot and chronology form the first layer of evidence.

    Sources for this stage[1][7]

  2. 2 · Scholarly interpretation

    Leading Hypothesis: A research- or interpretation-level hypothesis, not yet the established consensus, and subject to revision

    Compare models of ritual, power, and exchange

    Repeated placement or deliberate breakage can support ritual interpretations, but function and meaning remain open to competing models.

    Sources for this stage[1][2]

  3. 3 · Texts from the 8th century onward

    Historical Records: Based on historical records and archaeological evidence—the Kojiki, Nihon Shoki, Engishiki, excavation reports

    The chronicles also document their own age of compilation

    The Kojiki and Nihon Shoki preserve older traditions but are not contemporary records of Jōmon or Yayoi life; any correspondence with material evidence must be tested case by case.

    Sources for this stage[1][8]

2

Jōmon: living places and ritual places

Reading residence, exchange, and relations with the dead through space

No single Jōmon religious system survives. Settlement zones, cemeteries, mounds, stone circles, and broken dogu instead help reconstruct how communities shared time and place.

  1. 1 · Early–Middle Jōmon

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Settlements organize dwellings, graves, storage, and discard

    At Sannai-Maruyama, long occupation, the planned placement of facilities, and materials from distant sources reveal wide networks supporting daily life and collective practice.

    Sources for this stage[3][2]

  2. 2 · Middle–Final Jōmon

    Leading Hypothesis: A research- or interpretation-level hypothesis, not yet the established consensus, and subject to revision

    Broken dogu preserve action, not divine names

    Bodily form, breakage, and deposition support ritual readings, but do not establish a single function such as a fertility deity or a healing implement.

    Sources for this stage[1][2]

  3. 3 · Late Jōmon

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Burial, communal labor, and landscape meet at stone circles

    Stone circles such as Ōyu, associated with burials and buildings, were likely communal places, but their function cannot be reduced to an observatory alone.

    Sources for this stage[2][1]

3

Yayoi: paddies, bronzes, and emerging polities

Collective production and regional ritual instruments

Wet-rice farming reorganized water control, calendars, labor, storage, and distribution. Ritual bronzes such as bells, swords, and halberds did not homogenize the archipelago; their distributions reflect regional politics.

  1. 1 · from c. 10th century BCE

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Paddies and canals reorganize collective labor

    Irrigated fields spread from northern Kyushu at different speeds from region to region, while foraging, fishing, and dry farming remained part of mixed subsistence.

    Sources for this stage[1][4]

  2. 2 · from c. 5th century BCE

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    From practical metalwork to monumental ritual objects

    Bronzes derived from peninsular forms grew larger and less practical, and were deposited in regionally distinct ways. Meaning must be inferred cautiously from context.

    Sources for this stage[1][7]

  3. 3 · 2nd century BCE–3rd century CE

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Moats, large buildings, and cemeteries make authority visible

    The Yoshinogari sequence records settlement growth and spatial differentiation, but identifying the site with Yamatai is a separate hypothesis.

    Sources for this stage[4]

4

Kofun: the dead, authority, and archipelago networks

Reading giant tombs as negotiated authority, not a finished state

Keyhole tombs share a plan while varying in scale, grave goods, and haniwa arrangement. They formed political-ritual landscapes in which rulers and regional leaders displayed rank and renewed relationships through the dead.

  1. 1 · mid-3rd century

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    A shared keyhole-tomb form

    Early giant tombs including Hashihaka signal a wider order, but do not by themselves name their occupants or settle Yamatai’s location.

    Sources for this stage[1][9]

  2. 2 · 3rd–6th centuries

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Haniwa structure the space atop tombs

    The development from cylinders to houses, people, and animals marks boundaries and stages funerary scenes. Individual figures are not automatically deities.

    Sources for this stage[1][5]

  3. 3 · 5th–6th centuries

    Scientific Findings: Based on verifiable research—peer-reviewed papers, genetics, archaeology

    Human movement changes technology and ritual

    Genomes, kilns, horse gear, smithing, and inscriptions each reveal movement from the continent and the peninsula from a different direction. Genetic ancestry is not identical to cultural identity.

    Sources for this stage[6][1][7]

Method and limits

No single official database verifies every period of Japanese history. The atlas combines period-specific museum research, excavation reports, the Historiographical Institute, the National Archives, the National Diet Library, and other public collections.

These 200 events are a backbone for deeper work, not a claim to total history. To counter a politics-only narrative, the selection includes regional histories, Ainu and Ryukyuan/Okinawan experience, colonial rule, women, labor, disasters, technology, and everyday culture.

HIMOROGI republishes neither source images nor source text here; it provides metadata and original links. Dates and interpretations will change as research advances, while stable IDs remain fixed.

Read the Editorial PolicyStructured data (JSON)

Source registry

Core sources used by the events and deep dives. The terms stated by each provider, and on each individual record, always take precedence.

  1. [1]

    Permanent Exhibition Gallery 1: Prehistory and Ancient Japan (opens in a new tab)

    National Museum of Japanese HistoryResearch museum

    Coverage
    Research-based overview from human arrival roughly 37,000 years ago through the tenth century.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (49)

  2. [2]

    Jomon Prehistoric Sites: Learn about the component sites (opens in a new tab)

    Jomon Prehistoric Sites World Heritage OfficeOfficial overview

    Coverage
    Long-term Jōmon developments, with the chronology and features of 17 component sites in Hokkaido and northern Tōhoku.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (8)

  3. [3]

    Sannai-Maruyama Special Historic Site (opens in a new tab)

    Aomori PrefectureOfficial overview

    Coverage
    The large Early-to-Middle Jōmon settlement, its finds, its spatial organization, and its long-distance exchange.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (1)

  4. [4]

    History of Yoshinogari (opens in a new tab)

    Yoshinogari Historical ParkOfficial overview

    Coverage
    Settlement growth, moats, burials, and the transition from village to regional center across the Yayoi period.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (4)

  5. [5]

    Inscription of the Mozu-Furuichi Kofun Group (opens in a new tab)

    Agency for Cultural AffairsOfficial overview

    Coverage
    The social-political structure, hierarchy, and funerary system evidenced by fourth- and fifth-century tombs.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (3)

  6. [6]

    Ancient genomics reveals tripartite origins of Japanese populations (opens in a new tab)

    Science Advances / PubMedPeer-reviewed research

    Coverage
    The tripartite ancestry model proposed from ancient genomes spanning the Jōmon, Yayoi, and Kofun periods.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (1)

  7. [7]

    Comprehensive Database of Cultural Heritage in Japan (opens in a new tab)

    Nara National Research Institute for Cultural PropertiesResearch museum

    Coverage
    Archaeological excavation reports, with site and artifact metadata from across Japan.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (8)

  8. [8]

    Institutions and History of Japanese Era Names (opens in a new tab)

    Research and Legislative Reference Bureau, National Diet LibraryOfficial overview

    Coverage
    Institutional history of era names and chronological systems, including the traditional Jinmu epoch.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (1)

  9. [9]

    Imperial Mausolea and Tombs (opens in a new tab)

    Imperial Household AgencyPrimary-source archive

    Coverage
    Administrative information on imperial mausolea, with official attributions kept distinct from archaeological identification.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (1)

  10. [10]

    Permanent Exhibition Gallery 2: Medieval Japan (opens in a new tab)

    National Museum of Japanese HistoryResearch museum

    Coverage
    Court culture, warriors, trade and distribution, self-government, ikki leagues, and foreign relations from Heian through Azuchi-Momoyama.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (53)

  11. [11]

    Dai Nihon Shiryo Integrated Database (opens in a new tab)

    Historiographical Institute, The University of TokyoPrimary-source archive

    Coverage
    A scholarly chronological database for checking dated events and their source texts from 887 to 1867.
    Terms of use
    Used only to verify dates and source references. Data and images are not republished, and the institute’s own terms govern any use.
    Timeline events citing this source (59)

  12. [12]

    Permanent Exhibition Gallery 3: Early Modern Japan (opens in a new tab)

    National Museum of Japanese HistoryResearch museum

    Coverage
    Four diplomatic gateways, urban society, trade and distribution, villages, culture, and worldviews in early modern Japan.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (14)

  13. [13]

    Digital Exhibition 'Tenka Taihen' Timeline (opens in a new tab)

    National Archives of JapanPrimary-source archive

    Coverage
    Political and cultural events alongside earthquakes, eruptions, fires, and famines in the Edo period.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (9)

  14. [14]

    Expert Reports on Passing Down Lessons from Disasters (opens in a new tab)

    Cabinet Office, Disaster ManagementOfficial overview

    Coverage
    Expert reports combining historical records and scientific evidence on earthquakes, eruptions, floods, and other disasters.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (5)

  15. [15]

    Permanent Exhibition Gallery 5: Modern Japan (opens in a new tab)

    National Museum of Japanese HistoryResearch museum

    Coverage
    The nation-state, capitalism, empire, and modernity viewed through Ainu, Ryukyuan/Okinawan, and Buraku histories.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (27)

  16. [16]

    Japan's Path through Public Records: Timeline (opens in a new tab)

    National Archives of JapanPrimary-source archive

    Coverage
    Major events from 1867 to 1972 linked to records held by the National Archives of Japan.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (49)

  17. [17]

    Japan Center for Asian Historical Records (opens in a new tab)

    National Archives of JapanPrimary-source archive

    Coverage
    Digital archive of official records concerning modern Japan’s relations with Asian neighbors and others.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (31)

  18. [18]

    Birth of the Constitution of Japan (opens in a new tab)

    National Diet LibraryPrimary-source archive

    Coverage
    The constitution-making process from the end of the war to enforcement, with key documents, issues, and timelines.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (3)

  19. [19]

    Permanent Exhibition Gallery 6: Contemporary Japan (opens in a new tab)

    National Museum of Japanese HistoryResearch museum

    Coverage
    War and peace, occupation, changing everyday life, high growth, and pollution from the 1930s through the 1970s.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (20)

  20. [20]

    Digital Exhibition: Toward the High-Growth Era, 1951–1972 (opens in a new tab)

    National Archives of JapanPrimary-source archive

    Coverage
    Recovery, international reentry, growth policy, infrastructure, and pollution from the peace settlement to Okinawa’s reversion.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (10)

  21. [21]

    The Constitution of Japan (opens in a new tab)

    e-Gov Laws and Regulations SearchLegal text

    Coverage
    Current text of the Constitution promulgated in 1946 and effective in 1947.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (1)

  22. [22]

    Comprehensive Statistical Publications and Historical Statistics of Japan (opens in a new tab)

    Statistics Bureau of JapanPublic data

    Coverage
    Gateway to long-run population, economy, industry, and social statistics.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (9)

  23. [23]

    Historical Cabinets (opens in a new tab)

    Prime Minister's Office of JapanPublic data

    Coverage
    Cabinets and prime ministers since the cabinet system began in 1885.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (9)

  24. [24]

    Coronavirus Disease 2019 (COVID-19) (opens in a new tab)

    Ministry of Health, Labour and WelfarePublic data

    Coverage
    Official gateway to Japan’s COVID-19 response, policy changes, and related records.
    Terms of use
    HIMOROGI republishes only metadata and links. Reuse of images or text remains subject to the provider’s terms.
    Timeline events citing this source (1)