Why was the Adams- Onis Treaty Important?

The Adams-Onís Treaty, signed in 1819 between the United States and Spain, was significant because it resolved territorial disputes between the two nations, leading to the U.S. acquisition of Florida. It also defined the boundary between U.S. territory and New Spain (now Mexico), helping to solidify U.S. claims in the Southwest. Additionally, the treaty reflected the growing influence of the U.S. in North America and its expansionist ambitions, paving the way for future territorial growth.