The Pascua Yaqui Tribe is a federally recognized tribe of Yaqui Native Americans in southern Arizona. Descended from the Yaqui people whose homelands stretched from the modern day southwestern United States south into northern Mexico, the Pascua Yaqui Tribe sought refuge from the United States government during the Mexican Revolution. The United States subsequently recognized lands that were part of Yaqui ancestral territories near Nogales and south Tucson in the early 1800s. In the early 20th century, the tribe began to return to settlements south of Tucson in an area they named Pascua Village, and in Guadalupe, near Tempe. They gained recognition by the United States government on September 18, 1978.