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The Adams-Onís Treaty with Spain went into effect in 1821.
I believe it was the adams-onis treaty. Onis represented spain and Adams the US
This treaty was made between the US and Spain.
The US acquired Florida from Spain through the signing of the Adams-Onís Treaty.
Adams negotiated the "Transcontinental Treaty" with Spain in 1819 that turned Florida over to the U.S. and resolved border issues regarding the Louisiana Purchase. The treaty recognized Spanish control of Texas (a claim taken up by Mexico when it declared independence of Spain).
The 1819 Transcontinental Treaty with Spain ( also called the Adams-Onís Treaty ) settled boundary disputes between the The United States and Spain.
Spain retained her ownership of Texas via the Adams-Unis treaty.
Spain
Spain and the United States wrote and signed this treaty.
The Adams-Onís Treaty of 1819.
I'm not aware that he did. The Adams-Onis Treaty of 1819, between the United States and Spain, gave Florida to the U.S. and set out a boundary between the U.S. and New Spain (now Mexico).
Spain