-glaciers, so they'd need boats that could get them basically from Beringia to Vancouver
No, part of the peculiarity of the coastal migration route is that the coastline itself was-
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Yes, the reason early settlement of the Americas seemed unlikely was glaciers blocking land
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check out wiki pages on settlement of Americas; if it doesn't have it, I'll find it for you
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Problem is finding period of overlap between accessibility of Beringia & open passage south
End of conversation
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