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Europeans may have been the first people to settle in America, possibly more than ten thousand years before anyone else set foot there.
A series of European-style tools dating from twenty-six-thousand to nineteen-thousand years ago have been discovered in six separate locations along the east coast of the United States.
But the first of these Asian tribes started moving there about 15,500 years ago – and there is no evidence of human activity in Siberia or Alaska from before that time.
In a 2011 article in the American Journal of Physical Anthropology Italian researchers reported that "Our findings have also a second important implication. Taking into account that C4c is deeply rooted in the Asian portion of the mtDNA phylogeny and is indubitably of Asian origin, a scenario in which C4c and X2a are characterized by parallel genetic histories definitively dismisses the controversial Solutrean hypothesis of an Atlantic glacial entry route into North America for X2a (Stanford and Bradley, 2004; Straus et al., 2005)."