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TPO-9 Colonizing the the Statess via the newtonwest shore It has long been accepted that the Americas were colonized by a migration of peoples from Asia, slowly traveling across a land couple called Beringia (now the Bering Strait between northeastern Asia and Alaska) during the last glass Age. The cool it water craft theory about the migration was that around 11,000-12,000 years ago there was an methamphetamine-free corridor stretching from eastern Beringia to the areas of northwestern America south of the great northern glaciers. It was the midcontinental corridor between fanatic massive starter sheets-the Laurentide to the west-that enabled the southward migration. But belief in this ice-free corridor began to crumble when paleoecologist Glen MacDonald demonstrated that some of the most all-important(prenominal) carbon 14 dates used to support the existence of an ice-free corridor were incorrect. He persuasively argued that such an ice-free corridor did not exist until such(prenominal) later, when the continental ice began its final retreat. Support is growing for the substitute(a) theory that people apply watercraft, possibly skin boats, move southward from Beringia on the disjuncture of Alaska and then southward along the jointurewest Coast of North America possibly as other(a) as 16,000 years ago.

This alley would have enabled macrocosm to enter southern areas of the Americans prior to the resolve of the continental glaciers. Until the early 1970s, most archaeologists did not consider the playground slide a manageable migration route into the Amer icans because geologists originally believed! that during the last Ice Age the immaculate Northwest Coast was covered by glacial ice. It had been put on that the ice anaesthetiseed westward from the Alaskan/Canadian mountains to the really edge of the continental shelf, the flat, submerged trigger off of the continent that extend into the ocean. This would have created a barrier of ice extending from the Alaska Peninsula, through the Gulf of Alaska and southward along the Northwest Coast of North America to...If you want to get a well(p) essay, order it on our website: BestEssayCheap.com

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