 During Indian Removal of the 19th century, additional tribes received their land either by treaty via land grant from the federal government of the United States or they purchased the land receiving fee simple recorded title.Many of the tribes forcibly relocated to Indian Territory were from Southeastern United States, including the so-called Five Civilized Tribes or Cherokee, Chickasaw, Choctaw, Muscogee Creeks, and Seminole, but also the Natchez, Yuchi, Alabama, Koasati, and Caddo people.Between 1814 and 1840, the Five Civilized Tribes had gradually ceded most of their lands in the Southeast section of the US through a series of treaties.