Which sequence correctly distinguishes the treaty and transfer of Florida to U.S. control?
Note
Treaty in 1819, formal transfer in 1821 is correct. The 1819 Adams-Onís Treaty and the 1821 transfer are distinct dates in Florida's transition to U.S. control.
The Adams-Onís Treaty was signed in 1819, and Spain formally transferred Florida in 1821; neither date is Florida’s 1845 statehood.