mexico
Yes, the gulf of mexico is a part of the southwest region
The region was a part of Mexico until the mid 1800's
Sothern part
I'm guessing in the southwest region
central america
The US is a part of North America which includes CAnada and Mexico.
Geographically, it is considered part of the North American subcontinent. Culturally, it is part of the Latin American region.
Right.
The United States Census Bureau defines four regions - Northeast, Midwest, South and West. New Mexico and Arizona are in the southwestern U.S. and are in the West Region.
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
Sonora is still part of Mexico. It is located on the north western region of the country, just east of the Baja California Peninsula.http://en.wikipedia.org/wiki/Sonora