Bury my Heart at Wounded Knee

I am reading this book now, just started it. And I am realizing now how many Indian Tribe names and actual people names are borrowed to name things, places and stuff in America.

Places - Cities, mountains, rivers
Ottowa
Shasta
Miami
Kickapoo
Potomac
Delaware
Yuma
Mohave
Cheyenne
Navaho

Stuff
Cherokee
Pontiac
Black Hawke
Winnebago

I am sure there are more but I am only in the first chapter.

It saddens me to read how brutal colonists could be. I thought Pocahantis got with John Smith. Why did Disney change his name? It makes me think about how in Japan, they dont teach what atrocities went on in WWII and don't teach that they surrendered. It makes me wonder if what they teach in american history is totally skewed too. It must be.