Fantastic numbers of metallic weapons and tools excavated at several Phung Nguyen culture sites in northern Indochina are related to the start on the Copper Age in Southeast Asia.[20] On top of that, the beginning from the Bronze Age is confirmed for around 500 BC at Đông Sơn. Vietnamese historians https://vi-t-nam34455.creacionblog.com/30893615/the-smart-trick-of-gk88-that-nobody-is-discussing