Who were the first Americans?

An established theory says the first Americans walked across the Bering Sea about 13,000-15,000 years ago. But stone tools found in the mid-Atlantic suggest an arrival from Europe about 20,000-22,000 years ago. The tools match those made by the mysterious Solutrean people of ice-age Iberia. Read related article.

Who were the first Americans?
Source: Dennis Stanford and Bruce Bradley. The Washington Post. Published on February 29, 2012, 9:37 p.m.

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