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.
History of Florida
Following Abraham Lincoln's election in 1860, Florida joined other Southern states in seceding from the Union. Secession took place January 10, 1861, and, after less than a month as an independent republic, Florida became one of the founding members of the Confederate States of America. As Florida was an important supply route for the Confederate Army, Union forces operated a blockade around the entire state. Union troops occupied major ports such as Cedar Key, Jacksonville, Key West, and Pensacola. Though numerous skirmishes occurred in Florida, including the Battle of Natural Bridge, the Battle of Marianna and the Battle of Gainesville, the only major battle was the Battle of Olustee near Lake City.