Before revision: Japan Daisen Kofun, the largest of all kofun Hashihaka Kofun, Sakurai, Nara, 3rd century In Japan, powerful leaders built tumuli known as kofun.
After revision: AD,Japan Daisen Kofun, the largest of all kofun Hashihaka Kofun, Sakurai, Nara, 3rd century In Japan, powerful leaders built tumuli known as kofun.