What was the outcome of the American vs the Native Americans?

During the ensuing Wounded Knee Massacre, fierce fighting broke out and 150 Indians were slaughtered. The battle was the last major conflict between the U.S. government and the Plains Indians. By the early 20 century, the American-Indian Wars had effectively ended, but at great cost.

Explanation:

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts