- 
  
  Francisco Madero declares armed insurrection.
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  Madero become president
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  Porfirio Diaz leaves for Europe
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  General Victoriano Huerta become 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 Colombus, New Mexico
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  General Pershing Invades Mexico
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  Zimmerman telegraoh
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  Constitution of 1917 approved
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  Obregon overthrows Carranza