Bob Dylan's musical source for his song "Blowin' in the Wind was :

No More Auction Block for Me, he had allegedly scratched out the lyrics to “Blowin' in the Wind” in just 10 minutes and set it to a melody inspired by “No More Auction Block for Me,” an anti-slavery spiritual that predated the Civil War.

balls;0

is that it?

explanation:

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.