When Europeans first arrived on the east coast, they pushed the native people west. Each time, the government promised new land for the native people so they would have a home. Each time, the promises were broken while white settlers took the land. In the late 1800s, Sioux tribes in the northern plains and Apaches in the southwest fought back. Although they were strong, the U.S. government forces defeated them. Many tribes would live on reservations, which are federal lands administered by Indian tribes. Today there are more than 300 reservations. Toward the end of the 1800s, European powers colonized Africa and fought for rights to trade in Asia. Many Americans believed that the United States should do the same. Many other Americans did not like any action that seemed imperialistic.