Notes 2-3
1.Migration from Asia 1.Migration to North America between 25,000 to 30,000 years ago (based in fossil records) 2.Bering land Bridges existed during the last ice age. ( Called Bering strait also, which is between Alaska and Russia.) 3.Nomadic tribes from Mongolia and Siberia, traced herds of large mammals, which they survived on ( mammoth, bison, etc) 1.Physically strong and homogenerious 2.Cold prevented spread of disease