Adopted in 1918. Statehood in 1912. Arizona's state flag is divided into two halves. The top half consists of thirteen alternating red and yellow rays which represent America's thirteen original colonies. Because Arizona is a western state, the rays show a setting sun. The colors of the rays refer to red and yellow in the Spanish flags carried by Coronado when he came to Arizona in the sixteenth century. The bottom half of the flag is a solid blue field, the same color as the blue in the United States flag. A large copper colored star is superimposed in the center of the flag. This identifies Arizona as the largest producer of copper in the United States.