Ikegami-Sone — A Yayoi Settlement Reconstruction - c. 5th–4th century BCE
Osaka Castle Walks with Edward - mythic‑history edition

The Yayoi Age in Japan
Parallel Histories of China and the Korean Peninsula

The Yayoi period (c. 1000 BCE – 300 CE) transformed the Osaka region from older Jōmon settlements into a landscape of rice paddies and metalworking villages — a shift that would eventually move the region's center of power onto the Uemachi Ridge.

Note: following recent research based on radiocarbon dating, this page uses an extended chronology for the Yayoi period, from around the 10th century BCE to the 3rd century CE. The arrival of rice farming and Yayoi culture varied by region.

Quick Answers

The Yayoi period (c. 1000 BCE – 300 CE) was a transformative era in Japan, marked by wet-rice agriculture, the adoption and production of bronze and iron tools, and growing social stratification and the formation of regional political powers — set against parallel developments in China and Korea.

What was the Yayoi period in Japan?

The Yayoi period (c. 1000 BCE – 300 CE) was a transformative era in Japan, marked by wet-rice agriculture, the adoption and production of bronze and iron tools, and growing social stratification and the formation of regional political powers.

Who was Queen Himiko?

Queen Himiko was a 3rd-century ruler of Wa in Japan. The Chinese history Sanguozhi (Records of the Three Kingdoms) records her as one who served the spirits (kido). After the Civil War of Wa she led the Yamatai confederacy, sending envoys to Wei in 238 CE, where she received the title 'Queen of Wa, Friendly to Wei' among other honors.

How did early Japan interact with China and Korea?

Ancient Wa received wet-rice agriculture, metal objects, and many other skills and goods through exchange with the continent via the Korean Peninsula. In the 1st–2nd centuries CE, Wa rulers sent envoys to the Chinese dynasties and built formal diplomatic relations.

Experience This History in Person

Explore the stone walls, hidden moats, and battleground sites Osaka Castle, personally led by Edward Iftody. One historian. Six guests. One investigation.

Book Before Japan Had a Name
China
Japan (Yayoi Period)
Korean Peninsula
Key Interactions & Influences
China
Japan (Yayoi Period)
Korean Peninsula
Early Yayoi Transition (c. 1000–400 BCE)
c. 1000–800 BCE Late Western Zhou Dynasty
Zhou Political Order Transforms
The Zhou royal order transforms as regional lords grow ever more independent. Bronze vessels remain prized objects of ritual and authority.
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c. 1000–800 BCE
Late Jōmon → Early Yayoi Transition
In northern Kyushu and western Japan, some communities adopt wet-rice farming while Jōmon-era lifeways and the new farming culture coexist.
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c. 1000–800 BCE Mumun Pottery Period
Farming & Early Social Stratification
Millet farming spreads and the Mumun pottery culture develops across the peninsula. Social stratification advances gradually.
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Farming & Pottery Transfer → Korean Peninsula to Japan → Wet-Rice Farming Takes Root
c. 800–400 BCE Spring & Autumn → Warring States
States Compete for Dominance
Iron tool use spreads, and cities and trade develop. Regional states compete in military strength and political influence, and the Hundred Schools of Thought flourish.
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c. 800–400 BCE
Beginnings of the Yayoi Period
Wet-rice farming spreads into the Japanese archipelago via the Korean Peninsula, taking hold from northern Kyushu outward. New tools, polished stone tools, and early metal objects appear.
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c. 800–400 BCE
Gojoseon Takes Shape
The polity known as Gojoseon takes shape in northern Korea; its traditional founding date of 2333 BCE comes from the mythic Dangun legend and is not a confirmed historical date. Iron use and contacts with Chinese states increase in the Liao River basin.
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c. 800–400 BCE
Early Yayoi on the Kawachi Plain — The Osaka Evidence
At Nishifukui in Ibaraki, Early Yayoi pottery together with stone knives and clam-shell-edged stone axes has been excavated, confirming rice-farming communities on the Kawachi Plain. In Higashi-Osaka, the Guruido site preserves dwellings and square moated burials from the Yayoi period, and the Ikejima-Fukumanji site preserves production remains reaching back to the late Jōmon period. From around the 9th–8th centuries BCE in some areas, archaeology confirms wet-rice farming settlements in the Osaka region — and research increasingly seeks an earlier start to the Yayoi period than the traditional chronology allows.
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Settlement Expansion & Chiefly Societies (c. 400 BCE – c. 1st century CE)
c. 400–221 BCE Late Warring States
Philosophies & Armies
Philosophies flourish (Confucianism, Legalism). Regional states build large armies and fortifications. Trade across long-distance routes thrives.
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c. 400–221 BCE
Yayoi Communities Expand
Villages grow, and paddy construction and water management become more organized. Weaving and metalwork develop, and social hierarchies begin to form.
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c. 400–221 BCE
Formation of the Three Han — Mahan, Jin, Byeonhan
Polities known as Mahan, Jin, and Byeonhan take shape across the southern peninsula. Iron tools and wet-rice farming spread further.
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221–206 BCE Qin Dynasty (Unification)
Qin Shi Huang Unifies China
Unification in 221 BCE; standardizes weights, measures, coins, and writing. Builds road networks and links existing northern walls into the Great Wall.
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221–206 BCE
Chiefdoms Take Shape
Wealth differentiation is visible in burials. Burials with bronze mirrors, ornaments, and imported goods increase; regional strongmen and paramount chiefs emerge.
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221–206 BCE
Qin–Han Empires and the Korean Peninsula
Unified empires take shape in northern China under the Qin and Han, changing political and military relations with the Korean Peninsula and neighboring regions. Cross-peninsula exchange and movement increase.
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Metallurgy & Trade Links → Bronze Mirrors & Iron Tools → Imported to Japan
206–9 BCE (inc. 108 BCE) Han Dynasty (Early Western Han)
Han Influence Expands
Liu Bang founds the Han. The Western Han expands its reach, and in 108 BCE it conquers Wiman Gojoseon.
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206–9 BCE
Bronze Culture Flourishes
Bronze and iron objects arrive from the continent, and metal use and production spread through the archipelago. Exchange with distant regions (Shikoku, Kyushu, Korea) is active.
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206–9 BCE (inc. 108 BCE)
Han Influence & Four Commanderies
Han conquers Wiman Gojoseon in 108 BCE and sets up the Four Commanderies — Lelang and others — as recorded in Chinese histories. Through these commanderies, trade and political relations with China spread across the peninsula and touch relations with Wa as well.
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Complex Societies & Political Powers (1st–3rd centuries CE)
9–23 CE Xin Dynasty (Wang Mang)
Wang Mang's Reforms
Wang Mang attempts land reforms and overhauls the currency system. The Xin dynasty, founded in 9 CE, falls in 23 CE and the Later Han follows.
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9–23 CE
Complex Societies Develop
Large moated settlements appear. Rice surpluses support specialists and craft production.
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9–23 CE
Continued Continental Exchange
The Four Commanderies sit within political and trade networks linking the peninsula and China, creating routes along which people, technology, and goods move.
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25–57 CE Later Han (Eastern Han)
Maritime Trade Expands
During the Later Han, trade along China's southern and coastal regions develops, and exchange across the East China Sea grows.
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25–57 CE
Trade Networks Intensify
Active exchange of goods and ideas across the East China Sea. Advanced iron tools and irrigation spread.
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25–57 CE
Formation of Goguryeo
Goguryeo founded (traditionally 37 BCE). Strengthens in the north; begins expansion.
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57–108 CE Han Prosperity
Han China and Wa Diplomacy
Under the Later Han, the emperor receives envoys from surrounding states and grants titles and seals. Formal relations with Wa begin in this period.
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57–108 CE
Early Diplomatic Contact
Powerful polities grow across Kyushu, Kinai, and elsewhere. In 57 CE the king of Na receives a gold seal from the Han emperor, and in 107 CE envoys of Wa king Suishou are recorded in the Hou Hanshu as coming to the Later Han court with 160 captives.
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57–108 CE
Baekje and Silla Take Shape
Polities known as Baekje, Silla, and others take shape across the southern peninsula. Later histories such as the Samguk Sagi give traditional founding dates of 18 BCE for Baekje and 57 BCE for Silla.
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Writing & Administration ↔ Exchange of people, technologies, and ideas connected East Asia ↔ Ideas & Learning
1st–2nd centuries CE
The Civil War of Wa
In the late 2nd century, a conflict known as the "Civil War of Wa" is recorded in sources such as the Hou Hanshu; it is followed by the era of Queen Himiko and the Yamatai confederacy.
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1st–2nd centuries CE
Three Kingdoms Developing
Goguryeo, Baekje, Silla, and other polities grow, and competition over iron production and trade intensifies.
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2nd–3rd centuries CE Late Han Decline
Authority Weakens
Corruption and uprisings weaken Han authority, setting the stage for fracture.
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2nd–3rd centuries CE
Queen Himiko & Yamatai
After decades of conflict, Himiko is chosen as queen of the Yamatai confederacy. In 238 CE she sends envoys to Wei, receiving the title "Queen of Wa, Friendly to Wei" along with 100 bronze mirrors and other gifts. Social complexity peaks.
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2nd–3rd centuries CE
Regional States Flourish
Territorial expansion and diplomacy with China increase significantly.
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3rd century CE Three Kingdoms Period
Wei, Shu, and Wu
In 220 CE the Later Han falls, and Wei, Shu, and Wu take its place in the Three Kingdoms period.
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3rd–4th centuries CE
Transition to Kofun Period
After Himiko's death (c. 248 CE), the balance of power within Wa shifts. From the later 3rd to the 4th century, large keyhole-shaped kofun begin to be built across the regions, marking the transition to the Kofun period.
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3rd century CE (late)
Toward Unified Kingdoms
Goguryeo, Baekje, and Silla grow as three powers, laying the groundwork for the institutions and culture of the Korean Peninsula.
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Continue the Story at Osaka Castle

In the Yayoi period, wet-rice farming and metalworking techniques reached the archipelago via the Korean Peninsula, and Japanese society changed profoundly. The very ridge where Osaka Castle now stands changed along with it. Villages spread along the coastline, rivers, and lakes; new metal tools traveled with people on the move, and the balance of power between regions grew steadily wider.

If you’d like to follow how these Yayoi innovations set the stage for Osaka’s rise — from early settlements to the political struggles that defined the region — Before Japan had a Name traces 7,000 years of that story across the same ground where it unfolded.

Continue Exploring

The Yayoi world that rose here laid the foundations for the imperial state — and for the palace and castle that later crowned this ground.

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Last updated: October 2026

Edward Iftody — Osaka Castle’s Resident Historian

Research by Edward Iftody, Osaka-based historian and resident historian at Osaka Castle.

This reconstruction draws on contemporary European accounts, Japanese archaeological research, historical geography, and the surviving physical landscape.