Nomads who eventually came to be known as American Indians first reach the continent by:
Over a land bridge that crossed the Bering Strait.
Step-by-step explanation:
There are several theories that exist, quite one in all that might be correct. Maybe. ;) this can be what i learned. They stumbled on the land bridge and ice across the northern Bering Sea from Asia. The ice bridge went from western Asia to Alaska throughout the glacial period concerning thirty five,000 years past.