Koasati

The Koasati were a Muskogean-speaking people whose early towns lay in the Tennessee River valley. Spanish expeditions, including Hernando de Soto's in 1539–1543, recorded a town called Coste, believed to have been theirs.

During the eighteenth century some Koasati joined the Upper Creeks and maintained close ties with the Alabama. After 1763, colonial settlement pushed groups west through Louisiana; by 1795 some had reached the Big Thicket of eastern Texas, while others remained in Alabama until forced removal in the 1830s.