feb 22, 1819 - Signing in Washington City of the Adams-Onis Treaty with Spain, (also known as the Transcontinental Treaty, and ratified in 1821), which ceded Florida to the U.S., renounced claims to Oregon, gained recognition of Spanish sovereignty over Texas, and established the boundary line between the U.S. and New Spain
Added to timeline:
Date:
feb 22, 1819
Now
~ 207 years ago