Florida Became a Part of the United States in 1819

Florida became a part of the United States in 1819. The Adams-Onis Treaty, also called the Transcontinental Treaty, the Florida Treaty, and the Florida Purchase Treaty, defined the border between New Spain and the United States. The treaty took effect July 17, 1821. Spain gave the land to the United States if the United States assumed five million dollars of claims of American citizens against Spain. Older children can read the text of the treaty at: Adams-Onis Treaty.