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when in 1873 why for the food and to trade and plant how went to other countries to explore and buy. also christopher culumbus had dicided to go and travel to the other side because he thought that the world was flat.

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11y ago
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11y ago

There are several theories. The most common one being that during the Ice Age, sea levels were much lower so the Bering strait of Alaska and Russa was dry so around 11,000 years ago, the first humans in America crossed over the land bridge from Asia.

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9y ago

one is the land bridge theory

the other is the costal theory

and the l.ast one is the Australia theory.

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Q: What are two theories as to how people migrated to the Americas?
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Hello Sherali, Mr. Byrd here... Here are two theories I am familiar with: 1. Some say there was a large and long strip of ice from Russia to North America, which people were able to migrate across. This is supported by the ice age. 2. Others say that there was people who used watercraft (like boats) to sail here following coastal lines of Asia or other areas. Hope that helps, take care!


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