Which boundaries did the Adams-Onis Treaty settle?

The Adams-Onis Treaty, also called the Transcontinental Treaty of 1819, attempted to settle the boundary between the Spanish lands belonging to Mexico and the American territory. Spain, in Europe, was having many difficulties and knew that it needed to negotiate a treaty with the United States or lose Florida and some of its other holdings. Spanish foreign minister Onis signed a treaty with Secretary of State John Quincy Adams drawing a boarder between the Spanish owned lands and the newly acquired Louisiana Territory by the United States. This treaty allowed Spain to maintain its holding of Texas, California, and most of what is now New Mexico, Nevada, Utah, Arizona and parts of Wyoming and Colorado. In return for ratification Spain gave up all claims to the Oregon territory (which included northern California). This treaty wasn't ratified by the United States until 1831.