The United States.
Mexico has no longer "territories" but states. Some of them would be Chihuahua, Sonora and Coahuila.
Besides Mexico, also Canada and the United States qualify as such.
The Gulf south of the United States is the Gulf of Mexico. It is bordered by the southern United States, Mexico, and Cuba. The Gulf of Mexico is known for its warm waters, diverse marine life, and importance as a major shipping route.
The United States qualifies as such. 78.2% of Mexico's exports and 48.7% of its imports go and come from the United States, respectively.
Canada, Mexico, United States, and Venezuela
Atlantic and Gulf of Mexico
The Atlantic Ocean and the Gulf of Mexico.
United states, Middle east, Mexico, Canada
There are five major deserts in the southwestern United States. These southwestern states have major desert areas.California Nevada Utah Arizona Colorado New Mexico Texas
If you are referring to the United States as opposed to Mexico or Australia, the states where major desert areas are found are:CaliforniaNevadaArizonaNew MexicoTexasColoradoUtah
The Treaty of Guadalupe Hidalgo settled the boundary dispute between the United States and Mexico.