World War one

Assassination of Archduke Franz Ferdinand

Jun 28, 1914

Archduke Franz Ferdinand and his wife are assassinated by Gavrilo Princip, in Sarajevo. Beginning World War One.
Crash Course Start of WWI

Austria-Hungary declares war on Serbia

Jun 28, 1914

Due to the assassination of Archduke Ferdinand Austria Hungry declares war on Serbia accusing them of the assassination.

Germany declares war on France

Aug 3, 1914

Germany declares War on France because of their alliance with Russia. Germans try to defeat France by going through Belgium.

Battle of the Marne Begins

Sep 6, 1914

The French who are reinforced by 6000 soldiers are able to stop the German forces from taking control of Paris. The first win for the Allies in World War One.

Battle of Ypres begins

Apr 22, 1915

The first-time chemical warfare had been used in a war. Germans attack allied trenches with chlorine killing 5000 soldiers.

Sinking of the Lusitania

May 7, 1915

Germans' skink a cruise liner killing American citizens this leads the U.S. to put out a warning for the Germans.

Battle of Verdun Begins

Feb 21, 1916

One of the longest battles during WWI spanning over 10 months. Casing over 700,000 casualties.

Battle of the Somme begins

Jul 1, 1916

The bloodiest day in British history with over 20,000 causalities. The British offensives tried to draw the Germans out of Verdun leading to a success for the allies. Battle of Somme

United States Enters the War

Apr 6, 1917

British intelligence found the Zimmerman Telegram written by the Germans urging Mexico to join in the War efforts to defeat the allies. Due to this the United States declares war on Germany.

War ends

Nov 11, 1918

Allied forces and Germany signed an armistice treaty ending World War One.