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.
Polk County, Florida
For around 250 years after Ponce De Leon arrived on the peninsula, the Spanish nominally ruled Florida but established few settlements. In the late 17th century, Florida went through an unstable period in which the French and British ruled the peninsula. By this time, the remnants of early Native Americans joined with refugee Creek Native Americans from Georgia and The Carolinas to form the Seminole Indian Tribe, through a process of ethnogenesis.After the American Revolution, the peninsula briefly reverted to Spanish rule. In 1819, Florida became a U.S. territory as a result of the Adams-Onis Treaty. From the 1830s until 1842, the US conducted the Seminole Wars in an effort to remove the Seminole from the territory. Some were removed to Indian Territory, but others retreated to the Everglades and never surrendered.