Depending on how you define what the southwestern region of the US is, the states in the southwest region of the US are: California Arizona New Mexico Nevada Utah Colorado Texas Oklahoma
Texas and Oklahoma in Arizona
Arizona New Mexico Oklahoma Texas
I hope this is a joke
Caufornia,nevada,utah,arizona,colorado,nuevo mexico,texas.
Florida is closer to the equator.
Texas
Arizona, New Mexico, Oklahoma, and Texas.
Texas,Arizona,Oklahoma and Utah
The four Southwestern states in the United States are Arizona, New Mexico, Nevada, and Utah.
New Mexico, Utah, Wyoming, Nebraska, Kansas, Oklahoma and the corner of Arizona (where the 4 states come together).
Arizona is closer to Argentina, as are Texas, New Mexico, Nevada, Utah, and most of California. Southern states are closer to Argentina, and northern/northwestern states are closer to Spain.