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.
Springtime Tallahassee
The American Territorial Krewe represents Florida when it became a United States territory. On March 4, 1824 Governor William P. Duval named Tallahassee the official state capital. Later that year the town was officially named Tallahassee. Tallahassee was incorporated in 1825.