How Well Do You Know The History of The Wild West?

When was the Adams-Onis Treaty signed?

Jefferson wasn’t done after the purchase of Louisiana as he also had his eyes on Spanish Florida and wanted to claim it also. This led to the Adams-Onis treaty, or the Transcontinental Treaty which was signed in 1819, and effectively handed over Spain’s control of Florida to the United States and therefore created a new boundary between New Spain and the United States.

The treaty was however short-lived, as it only lasted about six months, after which Mexico gained independence after the signing of a treaty by Spain.