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Franz Ferdinand Assassination
The assassination of Archduke Ferdinand of Austria was a major reason leading up to World War I. -
Austria-Hungary declares war on Serbia
Austria-Hungary declared war on Serbia, which started affairs in Europe, turning this conflict into the Great War. -
First use of gas as a weapon by the Germans
The Germans started using gas to eliminate the opposition and to gain land. The other nation's armies started using the gas in the war. -
Sinking of the Lusitania
The Lusitania was sunk by the Germans in May 7, 1915. This act of violence created different propagandas and got the United States fired up. -
Woodrow Wilson reelected; pledged American neutrality
President Woodrow Wilson ran and won the November 1916 presidential election and pledged American neutrality in the Great War. -
The Zimmermann Note is intercepted
A note from Germany's foreign minister, Arthur Zimmermann, was intercepted from Britain for Mexico to take back the Southwest states of America to distract Congress form the Great War. -
The United States declares war
The U.S. declare war on Germany and Austria-Hungary after many submarine attacks on their own ships and other Allies' ships. -
Vladimir Lenin's Bolsheviks overthrow Russian government
A group called the Bolsheviks overthrow the Russian government and says Russia will continue to fight in World War I -
The Great War ends
Germany signs an armistice with the Allies, the Ottoman Empire and Austira-Hungary collapses, Germany removes troops from France, and the Allies win the war. -
Treaty of Versailles
The Treaty of Versailles was a treaty that officially ended World War I between Germany and the Allied Powers.
