The conquistador who explored much of the southwestern U.S. searching for cities of gold was .?

The conquistador who explored much of the southwestern United States in search of cities of gold was Francisco Vázquez de Coronado. In the mid-16th century, he led an expedition that traveled through present-day Arizona, New Mexico, Texas, and Kansas. Although he did not find the legendary cities of gold, his journey contributed significantly to European knowledge of the American Southwest.