Centuries of mistreatment at the hands of Washington have left most native Americans living on isolated reservations.
According to the latest government figures, there are nearly three million native Americans living in the US. The vast majority live west of the Mississippi River.
The Sioux nation in the state of South Dakota is America's fourth largest tribe. And now they're fighting to take back land which they say the US stole from them more than a century ago.
Tom Ackerman has more from the Black Hills in the US state of South Dakota.
