The Adams-Onís Treaty, signed in 1819, was an agreement between the United States and Spain. It settled border disputes and resulted in the U.S. acquiring Florida from Spain. The treaty aimed to resolve ongoing tensions and establish clear boundaries between the two nations. In addition to the transfer of Florida, the treaty defined the boundary between U.S. territory and Spanish possessions in the west. It also addressed issues related to the Native American tribes in the region. The agreement was named after John Quincy Adams, the U.S. Secretary of State, and Luis de Onís, the Spanish minister.