Arizona is one of the Four Corners states. It borders New Mexico, Utah, Nevada, and California, touches Colorado, and has a 389-mile (626 km) international border with the states of Sonora and Baja California in Mexico. It is the largest landlocked U.S. state by population. In addition to the Grand Canyon, many other national forests, Parks, and monuments are located in the state, while more than a quarter of its territory is Federal Trust Land which serves as the home of the Navajo Nation, the Hopi tribe, the Tohono O'odham, Apache and Yaqui people and various Yuman tribes, such as the Yavapai, Quechan and Hualapai.
The general consensus is that the name of the state comes from an earlier Spanish name, Arizonac, derived from the O'odham name al onak meaning "small spring", which initially applied only to an area near the Mexican silver mining camp of Planchas de Plata, Sonora This is supported by the fact that that area is still known as al onak in the O'odham language. Other possible origins that have been proposed are the Spanish phrase 'árida zona' (arid zone), shortened to Arizona or the Basque phrase aritz ona, "the good oak."