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Regional Syntheses of Palaeoecological Studies of Lakes and Mires in Europe. On the other, many of his findings are ignored and his theories dismissed.There are cultural reasons for this curious ambiguity.Although Posnansky was born in Austria, he spent most of his life in Bolivia studying the remains of Tiwanaku (Tiahuanaco) and the surrounding Altiplano of the High Andes.For this reason, he is almost universally held in high esteem by present-day Bolivians.Ever since José de Acosta's prescient speculation, in 1590, that Native Americans were descended from “savage hunters” who had followed game animals across a land bridge from northeastern Asia into northwestern America (Acosta 1604), most serious scholars have assumed that this was the migration route.


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