What is the leading theory about how early humans arrived in the American continents they walk from Africa to South America when those two continents were part of the same land mass they walked from Asia to North America over a strip of land that would have since been covered by the ocean they sailed in a large ship from Australia to North America the canoed from Antarctica to South America when the climate there became too hard
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The leading theory about how early humans arrived in the American continents is that they migrated from Asia to North America over a strip of land known as Beringia. During the last Ice Age, around 20,000 years ago, sea levels were much lower, and a land bridge connected Siberia in Asia to Alaska in North America. This land bridge is believed to have allowed humans to cross into the Americas. Evidence of this migration can be seen in the similarities between indigenous populations in Siberia and Native Americans. The theory of humans walking from Africa to South America when those two continents were part of the same land mass, or sailing in a large ship from Australia to North America, or canoeing from Antarctica to South America are not widely supported or substantiated by scientific evidence.
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