How did the Adams-Onis Treaty limit the Spanish claim on territory?

The treaty established the boundary of U.S. territory and claims through the Rocky Mountains and west to the Pacific Ocean, in exchange for the U.S. paying residents' claims against the Spanish government up to a total of $5,000,000 and relinquishing the U.S. claims on parts of Spanish Texas west of the Sabine River

what are local authorities doing to fix the problem

explanation:

its many islands, high mountains, and remote peninsulas isolated population centers.