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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.
FOR MORE THAN THREE GENERATIONS, Mexicans have attributed the origins of their political system to the Revolution of 1910-20. They cite the constitution of 1917, a sweeping document that capped nearly a decade of civil war among rival regional militias, as the foundation of their modern political institutions and practices. Mexico's governing institutions and political culture also bear the imprint of three centuries of Spanish colonial rule.