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Formation of the Yamato Polity

Type Event Region Japan Time 201–400

In the 3rd–4th centuries, centered on Yamato (the Nara basin), the Wa monarchy gradually integrated surrounding clans into an early state with the Ya…

Timeline

  1. 250–300Nara basin · JapanAfter the decline of Yamatai's power in the late 3rd century, clans in the Yamato basin rose in strength, and the Wa monarchy's center gradually shifted east, establishing its rule in the Yamato region.
  2. 239–363Jiankang (Eastern Jin capital) · ChinaWa repeatedly sent envoys to pay tribute to Wei, Jin, and Southern Dynasties regimes, receiving the title 'King of Wa' and introducing Chinese characters, calendars, and ritual systems to strengthen royal legitimacy.
  3. 300–400Yamato region and the Korean peninsula · JapanIn the 4th century the Yamato polity built large keyhole-shaped kofun tombs to display royal power; meanwhile Wa was active in the southern Korean peninsula, allying with Baekje against Goguryeo and expanding regional influence.

Sources