From which country did the United States purchase Florida?

The United States purchased Florida from Spain in 1819 through the Adams-Onís Treaty, also known as the Florida Purchase Treaty. This agreement established a boundary between the U.S. and New Spain (present-day Mexico) while transferring Florida to the United States. The acquisition was a significant expansion of U.S. territory, as Florida had been under Spanish control since the early 16th century. Spanish control of Florida was weakened over the years due to various conflicts and tensions, making it more feasible for the U.S. to negotiate this purchase. Understanding this context highlights the importance of Spain's role in the continent's colonial history and the strategic choices made by the United States in its westward expansion.