As the need for more land arose as a result of more farmers and more plantations (to create profit from) the government began to turn a blind eye to the continual pushing of colonists to the natives. During colonial times, it was ok as British limited westward expansion but once it was in the hands of the presidents, it was either to assimilate to US or be driven away. Andrew Jackson signed the Indian Removal Act 1830 and the Trail of Tears was the infamous name given to the forced Cherokee tribes away from their home in Georgia (bc of gold discovered a year before).
