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The Mexican Revolution began on November 20, 1910 as an attempt to overthrow the rule of Mexican President Porfirio Diaz, who had been in power since 1877. Diaz stepped down and submitted to exile in 1911.
Declared: September 15, 1810 (from Spain) Won: September 27, 1821 Mexico declared its independence on September 16, 1810, sparking the Mexican War of Independence. Howeverâ¦, the war wasn't over until September 27, 1821. So, Mexico technically didn't gain it's independence until 1821.