The United States signed the Adams-Onís Treaty with Spain on February 22, 1819. The treaty provided for the transfer of Florida from Spain to the United States, and established the southern boundary between the U.S. and Mexico.
The formal transfer of Florida took place on July 17, 1821. An exchange of flags occurred first at St. Augustine on July 10, and then on July 17 at Pensacola. Andrew Jackson became governor of the newly created territory of Florida.
As part of the treaty with Spain, the U.S. agreed to honor Spanish land grants in Florida. Spain encouraged settlement in Florida by offering land grants in order to boost economic activity in the colony. Holders of Spanish land grants could submit claims to the U.S. government for compensation, or to retain their land after 1821.
The Spanish land grants provide information on the settlement and cultivation of Florida during the Second Spanish Period (1783-1821), and the Territorial Period (1821-1845).
The collection of Spanish Land Grants on Florida Memory includes many land grant claims with colorful maps depicting the landscape of Florida.