Arizona is a state in the United States of America. It is considered part of the Southwestern United States and is bordered by New Mexico to the east, Utah to the north, Nevada to the northwest, California to the west, its northeast corner touches part of Colorado, this area is known as the Four Corners. To the south of Arizona is the country Mexico with which it shares a border of 389 miles (626 km). The state is called the "Grand Canyon State" and the "Copper State" as it is the home of the Grand Canyon and has produced large amounts of copper from its mineral deposits.
Arizona became a state on February 14, 1912 and became the 48th state accepted into the United States. The state capital is Phoenix, which also is the largest city in the state. Phoenix is the largest capital city in the US.
Arizona's climate can be very hot. In Phoenix, the average temperature is about 107 degrees Fahrenheit (42 degrees Celsius) in summer.