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

Illinois is a state in the Midwestern United States. It is the 5th most populous and 25th most extensive state, and is often noted as a microcosm of the entire country. Wikipedia