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.
List of Governors of Florida
The State of Florida was admitted to the Union on March 3, 1845. It seceded from the Union on January 10, 1861, and joined the Confederate States of America on February 8, 1861, as a founding member. Following the end of the American Civil War, it was part of the Third Military District. Florida was readmitted to the Union on June 25, 1868.