Adams-Onis Treaty

Definition

The Adams-Onis Treaty, also known as the Transcontinental Treaty, was an agreement between the United States and Spain in 1819. It settled border disputes between the two countries, with Spain ceding Florida to the United States and defining the western boundary of the Louisiana Purchase.

Related terms

Louisiana Purchase: This term refers to the acquisition of a vast territory by President Thomas Jefferson from France in 1803, doubling the size of the United States.

Monroe Doctrine: This policy declared by President James Monroe in 1823 stated that any European intervention or colonization in the Americas would be seen as a threat to U.S. interests.

Manifest Destiny: This belief held by many Americans during the 19th century claimed that it was their destiny and right to expand westward across North America.