Question

How did Japan's archipelago form?

Answer 1

Step-by-step explanation:

Most archipelagoes are made of oceanic islands. This means the islands were formed by volcanoes erupting from the ocean floor. ... The Japanese archipelago consists of four large islands, from Hokkaido, in the far north, through Honshu, Shikoku, and Kyushu in the far south.

Answer 2

It was originally attached to mainland Asian but following the end of the ice age and as sea levels s rises it became a seris of separate islands