Yayoi culture was introduced by countless migrations from Korea and China. Some Jomon people were conquered and assimilated by the Yayoi, while others simply adapted to the new technology and way of life. Furthermore, Ainu people, a particular population of Jomon that originated from Siberia, refused to adapt and preserved their traditions in the north of Japan. Specialists cannot agree on the topic of the Japanese genetic and cultural origins because they have no clear evidence about the actual contribution of each population. What is certain is that the Yayoi period is notable for the apparition of agriculture and bronze and iron tools and weapons, with big villages and communities that eventually created towns, commercial centers and tribe’s federations. It was an age of constant warfare, but the farmers practiced a communitarian life. The first written record of Japan appears now, when the Chinese named the country as “Wa” and spoke about the legendary shaman queen Himiko and the slow rise of Shintoism.