Kofun art

The third stage in Japanese prehistory, the Kofun, or Tumulus, period (c AD 250–552), represents a modification of Yayoi culture, attributable either to internal development or external force. The period is named for the large amounts kofun created during this period. In this period, diverse groups of people formed political alliances and coalesced into a nation. Typical artifacts are bronze mirrors, symbols of political alliances, and clay sculptures called haniwa which were erected outside tombs.