One theory is that they walked across the land bridge at Bering Straits. The other is that they came by boat, staying close to the coast line between Asia and America.
http://www.usnews.com/science/articles/2008/07/24/how-did-people-reach-the-americas
http://www.athenapub.com/10Dixon.htm
Describe the 2 theories of how people first came to the Americas:
1 answer
1 answer