[1] The Tombigbee and Natchez districts (also originally a French settlement) were the only areas populated by whites in the Mississippi Territory when it was formed by the United States in 1798.
The treaty further stated that "none of his Majesty's white subjects should be permitted to settle on the Tombecbee River to the northward of the rivulet called Centebonck" (Santa Bogue Creek in Washington County, Alabama).
[1][5] The British held West Florida until 1779–81, late in the American Revolutionary War, when it was captured by Spanish forces under the command of Bernardo de Gálvez.
The treaty stipulated that both countries would participate in a joint expedition to mark the agreed-upon boundary; President George Washington selected Andrew Ellicott as commissioner.
Tensions remained high between the American settlers and the Spanish in the Mobile District, in addition to the nearly constant threat of attack from hostile Muscogee tribes.
The city of Mobile remained in Spanish hands until General James Wilkinson took a force of American troops from New Orleans to capture it in April 1813.