Arizona is located in the western region of the United States. It has geographical borders with Utah, Colorado, and New Mexico, in the United States, as well as with Sonora in Mexico. The state is also situated on the Sierra Madre Occidental and is home to a segment of the Colorado River, as well as the Grand Canyon. Part of Aridoamerica, Arizona's landscape is composed, in its majority, of Cactaceae and desert species.
