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.
List of Governors of Florida
Spanish Florida was acquired from Spain in the Adams–Onís Treaty, which took effect July 10, 1821. Parts of West Florida had already been assigned to Alabama, Louisiana, and Mississippi; the remainder and East Florida were governed by a military commissioner with the powers of governor until the territory was organized and incorporated.