Section 1
Americans Push into Spanish Florida
Key Idea
In the years after the War of 1812, American settlers continued to push into new territories, particularly in the South. The Spanish-controlled territory of Florida became a major point of conflict. It served as a refuge for escaped slaves and several Native American groups, which created tension with American landowners in neighboring Georgia.
In 1818, General Andrew Jackson led U.S. troops on an invasion of Florida, claiming he was acting to stop raids by the Seminole people into American territory. Jackson's unauthorized invasion demonstrated that Spain had a weak hold on the region. This military pressure led Spain to cede Florida to the United States in the Adams-Onís Treaty of 1819, furthering U.S. expansion and increasing pressure on Native American lands in the Southeast.