Eventos
Gavrilo Princip assassinates Archduke Franz Ferdinand and his wifeGermany issues “Blank Check” to Austria-HungaryAustria-Hungary issues ultimatum to SerbiaRussia emphasizes to Germany they are NOT mobilizing (preparing)Serbia rejects ultimatum from Austria-HungaryAustria-Hungary declares war on SerbiaRussia mobilizes. Germany warns them to stand down.–France mobilizes in support of Russia. Germany mobilizes and
declares war on Russia.Germany declares war on France in anticipation of French support for
Russia. King Albert I of Belgium denies Germany permission to march through.Great Britain declares war on Germany when German troops march
into BelgiumThe British ocean liner Lusitania is sunk by German U-boat.Sussex Pledge – Germany (out of fear the U.S. will enter the war against
them) agree to end unrestricted submarine warfare.British intercept the Zimmerman TelegramGermany resumes unrestricted submarine warfareAmerica joins the war with the AlliesRussia (new government) signs Treaty of Brest-Litovsk with GermanyArmistice Day. Fighting ends.Períodos
Battle of MarneBulgaria joins the Central Powerswoodrow wilson is re-elected under the slogan "he Kept Us out of War"The Battle of Verdun. General Falkenhayn tries to
beat the French through attritionThe Battle of the Somme – The British pull German
attention from the French (Verdun)
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