I don't thing the natives has even invented the wheel yet when men came to the west...The Spanish brought horses early on....many tribes fought each other and the pictures some idiots like to paint of the native cultures is just plain dumb. Truth should be in education, both good and bad, not just a reinvention of history....
Some tribes were peaceful, some were warriors and damn good ones...
Sure, just like how Europe was, some nations just wanted to live in peace, some wanted to build an empire, but this idea that the natives only turned savage because of the white man is insane.