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from Asia to North America as long as 40,000 years ago. Others argue it was as recent as 15,000 years ago. Whenever, the consensus is that they came from Asia by way of a northern land bridge that once connected Siberia and Alaska. That land bridge, now recalled as Beringia, was the first gateway to Alaska. But these first visitors were hardly tourists intent on exploring new worlds. Rather they were simply pursuing their subsistence way of life as they followed great herds of grazing mammals across the grassy tundra and gentle steppes of Beringia. They came sporadically through many mille