Adams Onis treaty
The Florida cession took place in 1819
The people in it
The treaty was negotiated by John Quincy Adams, the Secretary of the state, U.S. President James Monroe, the Spanish foreign minister Luis de Onis, and King Ferdinand IIV.
All the other information
There was a treaty called The Adams–Onís Treaty which was also known as the Purchase of Florida, or the Florida Treaty. It was a treaty between the United States and Spain that gave Florida to the U.S. and set out a boundary between the U.S. and New Spain (which is now Mexico). It settled a standing border dispute between the two countries and was considered a triumph of American diplomacy.