The interview of whether Europeans migrated to the Americas onetime in time period has been a longstanding contention. In fact, for over 200 years scholars have asked whether primal Europeans mayhap migrated to the Americas prior to Columbus' finding. For example, by 1891 a volume suitable America Not Discovered by Columbus, by Rasmus B. Anderson, restrained a listing with some 350 sources on the subject matter. It planned claims of America's uncovering by Chinese, Arabs, Welsh, Venetians, Portuguese, and Poles. However, the figure of the references based on the opinion of Vikings as the premier Old World perceptiveness body of people to achieve the Americas.
This hypothesis was confirmed in 1960 when Norse rubble at L'Anse aux Meadows on the federal tip of Newfoundland were found by Helge Ingstad. More late individual sites and lines of demonstration have been cited as taking sides an even faster movement of Europeans into the Americas. This hypothesis, titled the Solutrean hypothesis, postulates that Upper Palaeolithic peoples from Europe utilizing Solutrean metal technology migrated into the Americas during the behind time Pleistocene. Evidence following such as an argument, however, excess cagey and outstandingly controversial, principally because the Solutrean terminated in Europe at tiniest 5,000 age in the past the introductory metallic element application appeared in the Americas. Likewise, archaeological, craniomorphological, and transmitted authentication argues antagonistic any pre-Columbus European settlements in the Americas that lasted more than a few seasons. For a more than indepth discussion of the prehistory of the Americas and the perceptiveness relationship of American Indians to other groups, I advise you consult my digest "Respect for the Ancestors: American Indian Cultural Affiliation in the American West" (Bauu Press, 2005).