OPATA (" enemies," so called by their neighbours the Pimas), a tribe of Mexican Indians of Piman stock. Their country is the mountainous district of north-eastern Sonora and northwestern Chihuahua, Mexico. Though usually loyal to. the Mexican government, they rebelled in 1820, Ijut after a gallant effort were defeated. They number now about 5000, and still largely retain their ancient autonomy.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)