Answer:
The correct answer is A. Following the War of 1812, Spain decided to cede Florida to the United States.
Explanation:
After the American Revolutionary War, Great Britain ceded Florida to Spain. Spain offered excellent conditions for the acquisition of land, attracting settlers from the newly formed United States, but the settlement of Spaniards failed, so Anglo-Saxon culture gained the upper hand. Several territorial disputes arose between the US and Spain, some of which led to military action. An American army under Andrew Jackson invaded East Florida during the First Seminole War. Jackson's forces captured St. Mark's on April 7, 1818 and Pensacola on May 24, 1818. James Monroe's Secretary of State John Quincy Adams stated the US position on the subject. Adams accused the Spaniards of breaking the Pinckney Treaty of 1795 because they failed to keep the Seminoles under control. In the 1819 Adams-Onis Treaty, Spain relinquished its Florida territories to the United States.
