After American settlers poured into Spanish Florida following the War of 1812 Spain decided to .?

After American settlers poured into Spanish Florida following the War of 1812, Spain decided to cede Florida to the United States. This led to the signing of the Adams-Onís Treaty in 1819, in which Spain formally transferred control of Florida to the U.S. in exchange for the U.S. renouncing any claims to Texas. The treaty marked a significant expansion of U.S. territory and helped to stabilize relations between the two nations.