They made it all the way around the world first. The polar people move North to South and South to North with the movement of the great herds through the cycles of the advances and restreats of the glaciers.
As they move they spread their genes.
That's why the Eskimos look so much like the Samurai clans that dominated the area around Fukuoka for so many centuries (that, BTW, is the highest concentration of Emeshi on Earth). Darndest thing ~ you could be looking for Nanuk and find Hiro.
Sorry I missed this post last year, a very interesting on.
Here is an interesting tidbit. My husband was 1/16 Cree (most likely) Indian, although he was red headed with bright light blue eyes. I am 1/2 German with Tartar ancestry many centuries back and 1/2 British/Celtic with hazel eyes. Our two sons have very dark brown eyes. Mongolian Tartar genes from me that were recessive to my European hazel eyes, but stronger than the completely recessive blue eyes of their father? When my oldest son who also has very dark hair and olive complexion went to have his wisdom teeth extracted, they discovered he had 6 wisdom teeth. They wanted to know if he had Eskimo blood. The Cree were a Canadian tribe, and probably had contact with the Eskimos. I find genetics fascinating.