There's a great book called, "Killers of the Flower Moon : The Osage Murders and Birth of the FBI". Talks about how the Osage were run off their original land and forced to settle on some rocky barren area in Oklahoma.
Turned out that area was over a massive amount of oil. At one point in time, the Osage Indians were the richest people on earth on a per-capita basis.
Anyway, it's an interesting read. Just for the murder mystery part of it.