Marked a break from the Neolithic culture of the Jomon and a shift toward a new culture that was probably influenced by immigrants from China and Korea.
C. They had lost land during border disputes after World War I.
France was involved in North America in the early 1400s and the late 1900s because they found and claimed most of the land.
It was never seriously considered. It was not used because it would have been to hard, as there was many failed attempts at it before.