Until recently, the common theory about how North America was populated was that the first humans migrated to Alaska from North East Asia and then moved on into the plains and to the East. The theory also asserted that the Clovis culture was the Neolithic culture of these early immigrants and that the American Indians are offspring of the Clovis people and the “native” population of North America.
However, the “Bering Strait” theory, as some call it, is unable to explain certain facts.
And perhaps therefore, it recently (2012) got competition: the Solutrean hypothesis.
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