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Franz Ferdinand Assassination
The assassination sparked the beginning of World War I -
Austria Hungary declares war
Austria Hungary declares war on Serbia -
First gas as a weapon
This is the first use of gas as a weapon by the Germans -
Sinking of the Lusitania
A German submarine launched a torpedo and sunk the Lusitania -
Wilson reelected
President Wilson was reelected and pledged American neutrality -
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
The United States join World War I -
Bolsheviks overthrow government
The Bolsheviks led by Vladimir Lenin overthrow the Russian government -
War ends
On November 11, 1918, fighting in World War I came to an end following the signing of an armistice -
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.