From nps.orgFrom Live Science:
The Americas were the last (well, second-to-last if you count Antarctica) continents to be inhabited by early humans. Archaeologists estimate that people entered North America by crossing over the Bering Strait, which back then was a wide swath of land, about 15,000 years ago.
In other words, people got here by walking a very long distance.
Our image of this major migration is fanciful. When I teach about the peopling of the Americas, I show a slide of people purposefully trekking in a straight line on a tundra from Siberia to Alaska, as if there was some destination on the other side and the only way to get there was to follow the leader, one behind the other.
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