Arizona is a state in the southwestern region of the United States. It is also part of the Western United States and of the Mountain West states. It is the sixth largest and the 15th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is one of the Four Corners states. Wikipedia

California is a state located on the West Coast of the United States. It is the most populous U.S. state, home to one out of eight Americans, and is the third largest state by area. Wikipedia