What did the federal government do in an effort to resolve conflicts with the frontier settlers and Indians in the 1870s?

In an effort to resolve conflicts with the frontier settlers in the 1870s, the federal government forced Native American Indians to ? live on reservation with definite boundaries. ... circumstances that pushed immigrants from their native countries to the United States.

Explanation:

https://quizlet.com/319589679/us-history-test-flash-cards/#:~:text=this%20set%20(40)-,In%20an%20effort%20to%20resolve%20conflicts%20with%20the%20frontier%20settlers,on%20reservation%20with%20definite%20boundaries.&text=circumstances%20that%20pushed%20immigrants%20from%20their%20native%20countries%20to%20the%20United%20States.

by creating a labor shortage that pushed the continent toward a market economy

there were abundant sources of fuel nearby