The Mexican Revolution By Fobos Nov 20, 1910 Francisco Madero declares armed insurrection. May 21, 1911 May 21, 1911 Porfirio Díaz leaves for Europe Nov 1, 1911 Madero becomes president Feb 1, 1913 General Victoriano Huerta becomes president Apr 22, 1914 U.S. Troops Occupy Veracruz Aug 20, 1914 Venustiano Carranza becomes president Mar 9, 1916 Pancho Villa attacks Columbus, New Mexico Mar 15, 1916 General Pershing invades Mexico Jan 1, 1917 Zimmerman telegraph Feb 2, 1917 Constitution of 1917 is approved May 1, 1920 Obregon overthrows Carranza
