Final answer:
U.S. policy towards Native Americans during this era shifted from removal to assimilation and civilization. The government aimed to acquire Native American land and assimilate them into American society through various means such as promoting land ownership, education, and Christian worship.
Step-by-step explanation:
During this era, U.S. policy towards Native Americans was characterized by a shift from removal and war to assimilation and civilization. The government aimed to remove Native Americans from their land, acquire their land through treaties, and assimilate them into American society. This included promoting individual land ownership, Christian worship, education, and American appearance. These policies resulted in the loss of Native American land, culture, and way of life.