Maritime history of Florida
Spain ceded Florida to the United States as part of the Adams–Onís Treaty of 1819, and Florida became a U.S. territory in 1821. Coastal trade with other markets continued to expand and towns like Jacksonville, Pensacola and Tampa became important ports. After becoming a U.S. territory, the federal government began building a series of lighthouses as aids to navigation along the coasts of Florida to mark dangerous headlands, shoals, bars and reefs.
History of St. Augustine, Florida
Florida was ceded to the United States by Spain in the 1819 Adams–Onís Treaty, ratified in 1821; Florida officially became a U.S. possession as the Florida Territory in 1822. Andrew Jackson, a future president, was appointed its military governor and then succeeded by William Pope Duval, who was appointed territorial governor in April 1822. Florida gained statehood in 1845.