According to the article "one if by land" what are the two leading paradigms pertaining to the colonization of the new world? Make sure to discuss the Clovis Culture and the coastal migration.
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The leading paradigm up until two to three decades ago was that humans could not have possibly migrated along the Pacific coast after crossing the ice-free corridor that led from northeastern Asia to northwestern North America. However, recent archaeology studies demonstrate that the northern Northwest Coast was not actually blocked with glacial ice after 14,000 B.C. as previously thought while at the same time the ice-free corridor was actually blocked instead from 21,000 to 11,000 B.C....
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