Which U.S. desert is named after a Mexican state and extends into Texas and New Mexico?

The U.S. desert named after a Mexican state and extending into Texas and New Mexico is the Chihuahuan Desert.

It is centered in northern Mexico, especially the Mexican state of Chihuahua, but its northern edge reaches across the international border. In the United States, it covers much of far West Texas, the lower Pecos Valley and middle-to-lower Rio Grande Valley of New Mexico, and small areas of Arizona. At roughly 502,000 square kilometers, it is North America's largest hot desert.

The Chihuahuan is not simply a sea of sand. Much of its landscape consists of desert grasslands, shrublands, limestone valleys, mountain ranges and broad basins. Its relatively high elevation and summer-dominant rainfall distinguish it from several neighboring deserts.

A common mix-up is the Sonoran Desert, which lies mainly farther west and includes parts of Arizona, California and northwestern Mexico. The Colorado and Mojave deserts are also separate regions, primarily in the American Southwest.