So. Firstly you have to get out of the whole urbanized thinking methodology. Urbanization was an advent of the industrial revolution.
Most people pre europeans in north america were nomadic. Some groups were not, but most of the plains indegenous people followed the bison herd around.
You can still go to museums and even indegenous history facilities to see how these groups managed.
But even without migration or 20th century housing the Inuit have been living in polar regions for a long time.
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