In the late 1500's spain colonized florida. Ponce de León sailed from Cuba with 200 men in two ships to establish a colony on the southwest coast of the Florida peninsula, probably near Charlotte Harbor.
ok I surrender!
Florida then had a population of Seminole Indians, Spanish colonists, English traders, and runaway slaves.
Florida continued to remain a Spanish possession until the end of the Seven Years' War when Spain ceded it to the Kingdom of Great Britain in exchange for the release of Havana. In 1783, after the American Revolution, Great Britain ceded Florida back to Spain under the provisions of the Peace of Paris.
In 1818, after years of additional conflicts involving natives, fugitive slaves, and settlers, General Andrew Jackson wrote to President James Monroe, who had been inaugurated in March 1817, informing him that he was invading Florida. Jackson's force departed from Tennessee and marched down to the Florida panhandle. Spanish officers surrendered coastal fortifications at Fort San Marcos.
In 1819, after years of negotiations, Secretary of State John Quincy Adams achieved a diplomatic coup with the signing of the Florida Purchase Treaty, which officially put Florida into U.S. hands at no cost beyond the U.S. assumption of some $5 million of claims by U.S. citizens against Spain
Formal U.S. occupation began in 1821, and General Andrew Jackson, the hero of the War and was appointed military governor. Florida was organized as a U.S. territory in 1822 and was admitted into the Union as a slave state in 1845.