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On Decemberfifth of 1913, the Triple Alliance expanded.
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On June 28 of 1914, Archduke Fronz Ferdinand was assassinated by a member of the Black Hand, Gavrilo Princip.
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On July 28 of 1914, Austria declares war on Serbia causing Russia to mobilize their troops.
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Germany begins to mobilize troops in preparation to declare war on Russia after they declined to stop mobilizing.
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On August first of 1914, Germany declared war on Russia for not listening when warned to stop mobilizing for Serbia.
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Lusitania was sunk by a U-boat on May seventh of 1915 causing the United States to join the war.
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On May third of 1916, Surgon Lt. Col. John McCrae wrote the poem In Flanders Fields.
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A telegram, called the Zimmerman Note was sent from Germany to Mexico to tell them to start preparing troops for war.
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On April second of 1917, the United States officially enters World War I and Wilson states "Make the world safe for a democracy."
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On June twenty eighth of 1919, the Treaty of Versailles was signed crating the League of Nations.
