Which explorer led Spain's 1540 expedition into the American Southwest?

Francisco Vázquez de Coronado led Spain’s 1540 expedition into the American Southwest.

Coronado, governor of New Galicia in New Spain, organized the expedition after Friar Marcos de Niza reported seeing a wealthy settlement associated with the legendary Seven Cities of Gold. Coronado departed Compostela on 23 February 1540, leading roughly 400 European soldiers, Indigenous allies, Franciscan friars, servants, and enslaved people.

The expedition crossed much of the present-day Southwest, including areas in Arizona, New Mexico, Texas, Oklahoma, and Kansas. Its goals included finding Cíbola, expanding Spanish claims, and locating valuable resources. Instead, the Spaniards encountered diverse Indigenous societies and fought the Tiguex War during the winter of 1540–1541.

Coronado’s expedition continued until 1542 and ultimately failed to find the fabled riches. It nevertheless produced important European accounts of the region, including descriptions of the Great Plains, bison, the Colorado River, and the Grand Canyon.