Describe Japanese society under the Yayoi around A.D. 300.
The Yayoi is an Iron Age era in the history of Japan traditionally dated 300 BC to AD 300.] It is named after the neighborhood 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. Techniques in metallurgy based on the use of bronze and iron were also introduced in this period. A hierarchical social class structure also emerged in this period. The Yayoi followed the Jōmon period (13,000–400 BC) and Yayoi culture flourished in a geographic area from southern Kyūshū to northern Honshū