Why do some scientist now think that some early american may have arrived in the americas via boat

New evidence has challenged the idea that all early Americans arrived via Beringia.

Explanation:

Most archaeologists believe that Beringia would be partially submerged. The people who came to the Americans would have to had taken a boat and quickly moved down the pacific coast, reaching Chile. There's no absolute proof, and there are some variations of this theory, but generally, they all contest the idea of early Americans arriving via Beringia.

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