Answer:
Manifest destiny was the belief that Europeans, then Americans / white people are culturally superior to Native Americans and those of other races. It was also the belief that it was God’s plan for white people to settle all of America and to “civilize” the native people. Since the Native Americans occupied the land that the white people believed they were supposed to take over, they “needed” to relocate the Native Americans. They didn’t see this as a problem, because they saw the Native Americans as inferior to them.