What's Tex mex?

"Tex-Mex" is a term used to describe a regional American cuisine that blends food products available in the United States and the culinary creations of Mexican-Americans influenced by the cuisines of Mexico. The cuisine has spread from border states such as Texas and those in the Southwestern United States to the rest of the country. In some places, particularly outside of Texas, "Tex-Mex" is used to describe a localized version of Mexican cuisine. It is common for all of these foods to be referred to as "Mexican food" in Texas, parts of the United States, and some other countries. In other ways it is Southern cooking using the commodities from Mexican culture. In many parts of the U.S. outside Texas, New Mexico, and Arizona, the term is synonymous with Southwestern cuisine.