The correct option is this: THE AMERICAN GOVERNMENT FORCED THE AMERICAN INDIANS TO LEAVE THE LAND.
The Homestead Act was the law enacted by Abraham Lincoln in 1862 to encourage the western migration of American people. This was done by providing 160 acres of public land to those who decided to migrate to the west. Due to the Homestead Act, the American Indians who had been in constant fight with the people over land were forced to leave.