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The Neolithic Period marked a shift from a nomadic lifestyle to a sedentary one, and people began to build shelters and stick around in one area, rather than just living in natural shelters. People were already making tools during the Paleolithic Era.
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How did the Ice Age affect where people settled in the Americas? It made a long bridge from Asia to the Americas. When the Ice Ages ended, people were able to migrate to different regions. ... The ice lowered water levels in the oceans so the land that had been under water became visible.
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