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
The State of Florida was admitted to the Union on March 3, 1845. It seceded from the Union on January 10, 1861, and joined the Confederate States of America on February 8, 1861, as a founding member. Following the end of the American Civil War, it was part of the Third Military District. Florida was readmitted to the Union on June 25, 1868.