United States territorial acquisitions
West Florida was declared to be a U.S. possession in 1810 by President James Madison after the territory had declared its independence from Spain. Madison ordered the U.S. Army to take control. Six weeks later, the army entered and occupied the capital, St. Francisville, putting an end to the republic after 74 days of independence. Spain did not relinquish its claim to sovereignty (see West Florida Controversy) until ratification of the Adams–Onís Treaty. General Andrew Jackson personally accepted the delivery of West Florida from its Spanish governor on July 17, 1821.
Louisiana
Louisiana became the eighteenth U.S. state on April 30, 1812; the Territory of Orleans became the State of Louisiana and the Louisiana Territory was simultaneously renamed the Missouri Territory. An area known as the Florida Parishes was soon annexed into the state of Louisiana on April 14, 1812.