[Spirochete]

Are we certain the Vikings didn’t make it here first, or the Asians by the land bridge between Russia and Alaska way way back when.

Lookup the Solutrean Hypotheis. In a nutshell, it proposes that Solutrean seal hunters had access to North America via the pack ice connecting southern France and New York. It flies in the face of PC conventional wisdom and has thus been met with great scorn.

https://en.wikipedia.org/wiki/Solutrean_hypothesis

Youtube fictionalized documentary, speculative

Lecture

More academic presentation

[thingumbob]

....sounds plausible to me.

[Little Bill]

Why have the Indians in the North East a high incidence of R1b DNA. I known the Frogs in Canada are horny bunch but the numbers are to high to account for that. There is some I M253 that is unexplained, unless you're a Viking.