WW1

By Erm9552
  • Germans fire

    Germans fire
    The Germans fire shells filled with chlorine gas at Allied lines. This is the first time that large amounts of gas are used in battle, and the result is the near-collapse of the French lines. However, the Germans are unable to take advantage of the breach.
  • Archduke assassination

    Archduke assassination
    Archduke Franz Ferdinand was assassinated in Sarajevo his death was the event that sparks World War I
  • Russia mobilizes

    Russia mobilizes
    Russia mobilizes its vast army to intervene against Austria-Hungary in favor of its ally, Serbia. It moved starts a chain reaction that leads to the mobilization of the rest of the European Great Powers, and inevitably to the outbreak of hostilities.
  • Lusitania sinks

    Lusitania sinks
    German submarine sinks the passenger liner Lusitania. The ship carries 1,198 people, 128 of Americans
  • Germany limits submarines

    Germany limits submarines
    Reacting to international outrage at the sinking of the Lusitania and other neutral passenger lines, Kaiser Wilhelm suspends unrestricted submarine warfare. This is an attempt to keep the United States out of the war, but it severely hampers German efforts to prevent American supplies from reaching France and Britain.
  • First tanks

    First tanks
    The British employ the first tanks ever used in battle, at Delville Wood. Although they are useful at breaking through barbed wire and clearing a path for the infantry, tanks are still primitive and they fail to be the decisive weapon, as their designers thought they would be
  • Submarines back

    Submarines back
    Germany resumes unrestricted submarine warfare in European waterways. This act, more than any other, draws the United States into the war and causes the eventual defeat of Germany
  • Zimmerman telegram

    Zimmerman telegram
    British intelligence gives Wilson the so-called Zimmermann Telegram, a message from German foreign secretary Arthur Zimmermann proposing that Mexico side with Germany in case of war between Germany and the United States. In return, Germany promises to return to Mexico the "lost provinces" of Texas and much of the rest of the American Southwest. Mexico declines the offer, but the outrage at this interference in the Western Hemisphere pushes American public opinion to support entering the war.
  • Wilson for War

    Wilson for War
    President Wilson outlines his case for war to Congress.
  • Wilson war

    Wilson war
    President Wilson outlines his case for war to Congress
  • U.S. Enters War

    U.S. Enters War
    Congress authorizes a declaration of war against Germany. The United States enters World War I on the side of France and Britain