How did the U. S. Government handle the remaining Native Americans who were not massacred in the 1800s?

In 1823 the Supreme Court handed down a decision which stated that Indians could occupy lands within the United States, but could not hold title to those lands. This was because their "right of occupancy" was subordinate to the United States' "right of discovery." In response to the great threat this posed, the Creeks, Cherokee, and Chicasaw instituted policies of restricting land sales to the government. They wanted to protect what remained of their land before it was too late.