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.
Lakeland, Florida
Florida became a state in 1845, and Polk County was established in 1861. After the American Civil War, the county seat was established southeast of Lakeland in Bartow. While most of Polk County's early history centered on the two cities of Bartow and Fort Meade, eventually, people entered the areas in northern Polk County and began settling in the areas which became Lakeland.