Why did the overland migratory stream from Asia to the Americas end about nine thousand years ago?

1 Answer
Oct 19, 2016

The rising oceans submerged the land bridge where the Bering Strait currently lies.

Explanation:

During the last Ice Age, a land bridge existed between the Asian and American continents which facilitated migration.

With the ending of the Ice Age and the melting of glaciers, over time the rising ocean levels submerged the land bridge forming what is now known as the Bering Strait.