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State in southwestern USA, bordered to the east by
New Mexico, to the south by the Mexican state of Sonora, to the west by the Mexican state of Baja California and the US states of
California and
Nevada, and to the north by
Utah and, at the Four Corners to the northeast,
Colorado; area 294,313 sq km/113,635 sq mi; population (2000) 5,130,600; capital and largest city Phoenix. A desert state of mountains, plateaux, and dry basins, Arizona is renowned for its natural wonders, such as Monument Valley and the
Grand Canyon. The
Colorado River marks the state's boundary between Nevada and California. Service industries, including tourism, provide the main source of revenue, but copper, silver, and uranium mining, and aeronautics and electronics are also important. Cotton is grown under irrigation, and ranching is widespread.
Tucson is the second largest city; other major conurbations include Mesa, Tempe, Scottsdale, Glendale, and Flagstaff in the north, and Yuma on the Californian border. Arizona has the third largest American Indian population in the USA, with 21 federally-recognized peoples (including the
Navajo,
Apache, and
Hopi) owning over 5.8 million ha/14.7 million acres, or 28%, of Arizona's land. Arizona was admitted to the Union in 1912 as the 48th US state.
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