How did Native Americans' lives change when Americans moved westward?

Well, they started invading they're land. Claiming it like it was there to keep. They pushed Native Americans to the side like they didn't own anything. People even invaded villages. Then they were pushed to "Rez's" small area's that the "white" people gave them.

Westward expansion resulted in Native Americans losing their native homelands and changing their culture to accommodate teachings from white settlers. It also resulted in a number of deaths among their population.