Ahistorian who studies how and why people migrated from asia to the americas is most likely interested in what?

Evolution and culture.

Explanation:

Historically many theory stars that the human migration was formed from the  Beringia to the interior of North America and is associated with the discovery of the then found artifacts and their expansion f the settlers found along the north Americas and is studied along with the glaciation periods to expo, in the early settlements. Pacific ocean routes where to place wee the people first reached the Americas and thus rapidly spread to the coastal sides of the Alaska. As the eastern Asian predominated the coastal areas.

Which one is the underlined word?