[atomi]

And then came Colt's Revolver.

> A Texas Ranger, Captain Samuel Walker, wrote Colt a testimonial that read, in part:"Your pistols...[are] the most perfect weapon in the World... to keep the various warlike tribes of Indians and marauding Mexicans in subjection."

https://www.pbs.org/wgbh/theymadeamerica/whomade/colt_hi.htm...

[inglor_cz]

The 20th century decolonization wars showed that natives can adapt to modern weaponry fairly well.

But you need the numbers to pull this off. Sioux are not numerous enough to threaten American dominance of their territory. If they were as numerous as, say, Punjabis, that would be a different story.

[selimthegrim]

Punjabis acquitted themselves fairly well in 1849.