From Wikipedia

500 Nations

Episode 7: Roads Across the Plains

Native tribes of the Great Plains watched their lifestyles end as American settlers extinguished huge buffalo herds. Though native leaders pursue a path of peace it is met with tragedy at Sand Creek. The massacre suffers severe repercussions.

Episode 8: Attack on Culture

The final episode of this mini series explores the legislative attack on native ways, including the disbanding of communal land.