Three Main Theories

The land bridge is the bridge made of land that was dropped to make the land bridge, and it was the bigger land piece. The ice bridge is the Bering strait that froze, so  people could go over the bridge. The Continental shelf was about when it connected Asia and Alaska so people could walk across. That is the three main theories we believe are true. I believe the land bridge is the most believable, because the bridge that dropped over time separated Asia from Alaska, so you can actually see that theory.