Im not sure if anyone knows that but god. There have been people there for as long as anyone can remember even if they migrated from china or Korea which is believed to be true, there was the natives who lived there first called the ainus. similar to the native Americans but for Japan.
The Japanese civilization started in 3175BC. The civilization is still here now.
About 2,000 years ago.
It's started when sea food came to be
civilization
The Yamato clan :)
On the southern island of Kyushu and the incoming Korean pirate regime from Pusan who produced the first emperor Jimmu on Hokkaido.
The Japanese civilization got into the Philippines because they want to dominate the Philippines.
The civilization started along the Indus River
The Sumerian Civilization started around 3000 B.C.
because they had all the things that matched the definition for civilization
The Incan civilization started around 1200 A.D.
Greece civilization started in 8th centery b.c