United States territorial acquisitions
West Florida was declared to be a U.S. possession in 1810 by President James Madison after the territory had declared its independence from Spain. Madison ordered the U.S. Army to take control. Six weeks later, the army entered and occupied the capital, St. Francisville, putting an end to the republic after 74 days of independence. Spain did not relinquish its claim to sovereignty (see West Florida Controversy) until ratification of the Adams–Onís Treaty. General Andrew Jackson personally accepted the delivery of West Florida from its Spanish governor on July 17, 1821.
Cuban Americans
Before the Louisiana Purchase and the Adams–Onís Treaty of 1819, Spanish Florida, and when divided during British occupation, East Florida and West Florida, including what is now Florida and the Gulf Coast west to the Mississippi River were provinces of the Captaincy General of Cuba (Captain General being the Spanish title equivalent to the British colonial Governor). Consequently, Cuban immigration to the U.S. has a long history, beginning in the Spanish colonial period in 1565 when St. Augustine, Florida was established by Pedro Menéndez de Avilés, and hundreds of Spanish-Cuban soldiers and their families moved from Cuba to St. Augustine to establish a new life.