What was an element of the Adams-Onis Treaty?

The Adams-Onís Treaty, signed in 1819 between the United States and Spain, resulted in Spain ceding Florida to the U.S. Additionally, the treaty established a boundary between U.S. territory and New Spain (now Mexico), defining the limits of both nations' claims in North America. This agreement helped to reduce tensions between the U.S. and Spain and facilitated westward expansion.