Adams-Onís Treaty

The Adams-Onís Treaty was a bilateral agreement between Spain and the United States, signed on February 22, 1819 by the American Secretary of State John Quincy Adams and the Spanish minister Luis de Onís. Under it the United States acquired Florida and renounced its claims to Spanish Texas, while the two powers drew the first transcontinental boundary across North America, running from the Gulf of Mexico along the Sabine, Red and Arkansas rivers and then along the forty-second parallel to the Pacific. The United States also undertook to satisfy its own citizens' claims against Spain up to five million dollars. The treaty's provisions remained in full effect only until August 24, 1821, when the Treaty of Córdoba acknowledged Mexican independence, and it was formally terminated in 1902. The boundary it defined was later recognised between Mexico and the United States.