What treaty reestablished boundaries between the US and Spain after the Louisiana Purchase?

The Adams-Onis Treaty, also known as the Transcontinental Treaty, was instrumental in reestablishing boundaries between the United States and Spain following the Louisiana Purchase. This treaty, concluded in 1819 and ratified in 1821, addressed territorial disputes that arose after the United States acquired a vast expanse of land from France in 1803.

Specifically, the treaty defined the boundaries of the territory acquired, enabling the U.S. to clarify its borders with Spanish territory. It effectively ceded Florida to the United States and established a boundary that extended all the way to the Pacific Ocean, demarcating the limits of both nations’ territories. This agreement was crucial in consolidating U.S. expansionist goals and resolving conflicting claims in North America, thereby providing a clearer framework for future development and settlement in the region.

The other treaties mentioned—such as the Treaty of Guadalupe Hidalgo, which ended the Mexican-American War and reshaped the U.S.-Mexico border, the Treaty of Fort Laramie, which involved various Native American tribes and the U.S. government, and the Paris Peace Treaty, which concluded the Revolutionary War—are not related to the boundary reestablishments between the U.S. and Spain after the Louisiana