"Miguel Hidalgo y Costilla, a Catholic priest, launches the Mexican War of Independence with the issuing of his Grito de Dolores, or "Cry of Dolores," The revolutionary tract, so-named because it was publicly read by Hidalgo in the town of Dolores, called for the end of 300 years of Spanish rule in Mexico, redistribution of land, and racial equality. Thousands of Indians and mestizos flocked to Hidalgo's banner of the Virgin of Guadalupe, and soon the peasant army was on the march to Mexico City. (History.com)The rest of the story is very interesting. I spent a couple of years in Mexico It was a lot fun observing independence activities south of the border.
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