Why were native americans moved so far from their native lands?

how did the removal of native americans from their native lands affect the people and their tribal cultures?

The native American had reservations, a legal designated area for natives to live on.

The removal of Native Americans from their native lands affected the people and their tribal cultures because it caused the "Trail of Tears" which killed thousands of natives(made the population go down a little).Natives had to cope to the slew society they were in and didn't really practice their religion.They couldn't have their birth names like Black Bear or Sea Hawk.They had to live normally or like withe people as the other person said.Most people who are natives don't have ceremonies or speak that language because people have already done so much to cope with the modern society.