What country did the Adams onis treaty seem to favor in?

The Adams-Onís Treaty, signed in 1819 between the United States and Spain, seemed to favor the United States. The treaty resulted in Spain ceding Florida to the U.S. and defined the boundary between U.S. territories and New Spain (now Mexico). This expansion of U.S. territory was a significant gain for the United States, enhancing its influence in North America while resolving ongoing border disputes.