“The Sioux Uprising of 1862 in Minnesota pretty much deracinated the southern third of the state.”
Yeah, that was a brutal summer for the settlers.
With all the problems the Sioux had at that time it was general believed they were instigated to go to war by Confederate agents working through tribes in Canada.
They DID have lots of tribesmen instigating the other tribes all over the west.
The tribes that made or were negotiating treaties with the Confederacy.
Cherokees, Creeks, Choctaws, Comanches, Wachitas, Kiowas, Pottawattamies, Chickasaws, Osages,
Seminoles, Senecas, Shawnees, Quawpaws.
The South also had Indian agents operating all throughout the High Plains and mountain region stirring up other tribes such as the Sioux, Cheyenne, Arapaho, Navajo and Apaches to make war on the Union at that time.
Their traditional enemies, Pawnee, Kaw, Osage (well, part of them) remained loyal to the Union.
“There is little doubt that the recent outbreak in the Northwest (Minnesota Uprising) has resulted from the efforts of secession agents operating through Canadian Indians and fur-traders.”—Mr Giddings, US Counsul-general in Canada
From readings in the past my recollection is that the Sioux were quite warlike (to say the least) and the settlers were not. Many were immigrants from northern Europe and did not even have firearms. They were basically dirt scratchers eaking out a living off the land. Unlike the Scots Irish in the east who by nature itched for fights, these settlers were on the pacifist side. Memory is over 300 men, women and children were killed. Fascinating history.