The second period called Yayoi period is an era in the history of Japan traditionally dated 300 BC to 300 AD. It is named after the neighbourhood of Tokyo where archaeologists first uncovered artifacts and features from that era. Distinguishing characteristics of the Yayoi period include the appearance of new pottery styles and the start of an intensive rice agriculture in paddy fields. Yayoi culture flourished in a geographic area from southern Kyūshū to northern Honshū.
The last period called Kofun period of ancient Japanese history, beginning around AD 250, is named after the large tumulus burial mounds (kofun) that appeared at the time. The Kofun period saw the establishment of strong military states centered around powerful clans, and the establishment of the dominant Yamato polity centered in the Yamato and Kawachi provinces, from the 3rd century to the 7th century, origin of the Japanese imperial lineage. Japan started to send tributes to Imperial China in the 5th century. In the Chinese history records, the polity was called Wa and its five kings were recorded. Based upon the Chinese model, they developed a central administration and an imperial court system and its society was organized into occupation groups. Close relationships between the Three Kingdoms of Korea and Japan began during the middle of this period, around the end of the 4th century.