Final answer:
The Native American lands were slowly taken away through government policies and actions, resulting in the splitting up of tribal groups and traditions.
Step-by-step explanation:
The native American lands were slowly taken away through a series of government policies and actions. The government wanted to confine the Plains Indians to reservations and teach them agricultural practices instead of their traditional hunting lifestyle.
By the end of the 1800s, most tribal lands were taken and Native Americans were moved to reservations, resulting in the splitting up of tribal groups and traditions.
This process of taking away lands and forcing Native Americans onto reservations had significant cultural and economic consequences.