Answer:
On September 16, 1810, Miguel Hidalgo y Costilla, a respected Catholic priest (and an unconventional one, given his rejection of celibacy and love of gambling) issued a passionate rallying cry known as the “Grito de Dolores” (“Cry of Dolores”) that amounted to a declaration of war against the colonial government.
OR
In the early 19th century, Napoleon's occupation of Spain led to the outbreak of revolts all across Spanish America. Miguel Hidalgo y Costilla—“the father of Mexican independence”—launched the Mexican rebellion with his “Cry of Dolores,” and his populist army came close to capturing the Mexican capital.