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World War I

  • Franz Ferdinand Assassination

    Franz Ferdinand Assassination
    The assassination sparked the beginning of World War I
  • Austria Hungary declares war

    Austria Hungary declares war
    Austria Hungary declares war on Serbia
  • First gas as a weapon

    First gas as a weapon
    This is the first use of gas as a weapon by the Germans
  • Sinking of the Lusitania

    Sinking of the Lusitania
    A German submarine launched a torpedo and sunk the Lusitania
  • Wilson reelected

    Wilson reelected
    President Wilson was reelected and pledged American neutrality
  • Zimmermann Note

    Zimmermann Note
    The Zimmermann Telegram was a secret diplomatic communication issued from the German Foreign Office in January 1917 that proposed a military alliance between Germany and Mexico in the prior event of the United States entering World War I against Germany.
  • U.S. declares war

    U.S. declares war
    The United States join World War I
  • Bolsheviks overthrow government

    Bolsheviks overthrow government
    The Bolsheviks led by Vladimir Lenin overthrow the Russian government
  • War ends

    War ends
    On November 11, 1918, fighting in World War I came to an end following the signing of an armistice
  • Treaty of Versailles

    Treaty of Versailles
    The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers.