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Francisco Madero declares armed insurrection.
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May 21, 1911
Porfirio Díaz leaves for Europe -
Madero becomes president
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General Victoriano Huerta becomes president
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U.S. Troops Occupy Veracruz
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Venustiano Carranza becomes president
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Pancho Villa attacks Columbus, New Mexico
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General Pershing invades Mexico
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Zimmerman telegraph
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Constitution of 1917 is approved
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Obregon overthrows Carranza