World War 1

By TylerR.

  • Archduke Ferdinand's Assassination

    Archduke Ferdinand's Assassination

  • Austria-Hungary Declares War on Serbia

    Austria-Hungary Declares War on Serbia
    A-H makes demands, Serbia does not comply, A-H declares war because of this.

  • Germany Declares War on Russia

    Germany Declares War on Russia

  • Germany Declares War on France

    Germany Declares War on France

  • Poison Gas

    Poison Gas
    First used by the Germans

  • Submarine Warfare

    Submarine Warfare
    German U-Boat torpedoes A British passenger liner, Lusitania. 1000 people die. Leads to creation of Sussex pledge.

  • Armored Tank

    Armored Tank
    First used by Allies

  • Germany Reverses Policy on Submarine Warfare

    Germany Reverses Policy on Submarine Warfare
    Germany would sink all vessels heading to allied ports.

  • Zimmerman Telegram Published

    Zimmerman Telegram Published
    Telegram from Germany to Mexico intercepted by British, published in newspapers on March 1, 1917.

  • America Joins the Fight

    America Joins the Fight
    President Wilson asks congress for a declaration of war on Germany. Made official on April 6.