What regions would the current states of Mississippi and Alabama be considered at the end of the American Revolution?

Mississippi Territory. Outside of these two areas, the territory was populated only by American Indians.

Explanation: The Mississippi country was opened to settlement in 1798 when Congress organized the Mississippi Territory. (Until it became a separate territory in 1817, Alabama was part of Mississippi.) A few settlers already lived in Mississippi when it became a territory. They were concentrated in two principal areas - the Natchez District and the lower Tombigbee settlements above and west of Mobile. Approximately 4,500 people, including slaves, lived at Natchez, considerably more than the combined free and slave population of 1,250 that inhabited the Tombigbee settlements in 1800. Outside of these two areas, the territory was populated only by American Indians.