Scholars estimate that human migration into the Americas over the Bering Strait occurred
a. 2,000 years ago.
b. 5,000 years ago.
c. 9,000 years ago.
d. 11,000 years ago.
e. 18,000 years ago.
The pre-Columbian North American peoples in the Pacific Northwest
Who was the first known European to look westward upon the Pacific Ocean, in 1513?