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Archduke Franz Ferdinand was assassinated
Franz Ferdinand and his wife were assassinated by Gavrilo Princip, while visiting Sarajevo. -
Period: to
World War 1
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The Panama Canal opens to traffic
The Panama Canal is opened up to traffic going through. -
Period: to
First Battle of Marne
The allies pushed the German lines back 40 miles north of the Aisne River. -
Italy Joins the Allies
Italy remained neutral until 1915. -
Period: to
Battle of Verdun
The battle began with a 21 hour artillery barrage, then 1 million German Fifth Army soldiers advanced on 200,000 French defenders. -
Period: to
Battle of the Somme
The allied powers launched an offensive near the Somme River in Northern Francce. Their goal was to exhaust the enemy's reserves, In the battle British forces suffered 60,000 casualties -
Erich von Falkenhayn is replaced by Paul von Hindenburg as German Chief of Staff.
Paul von Hindenburg replaces Erich von Falkenhayn as German Chief of Staff. -
U-boats sank five American ships
German torpedoes sank five American Ships -
Zimmerman Note
This note proposed a Mexican alliance with Germany. The cable offered German support to help Mexico "reconquer the lost territory in New Mexico, Texas, and Arizona." -
President Wilson asked Congress for a declaration of war
President Woodrow Wilson concluded that the U.S. could no longer stay neutral. -
Congress passed Selective Service Act
It required men between ages 21-30 to register with the local draft boards -
The first American troops land in France
First American troops land in France -
Thousands of U.S. soldiers marched through Paris, France
These soldiers helped France fight for their freedom because the U.S. was repaying the French for their help during the Revolutionary War. -
Period: to
Battle of the Argonne Forest
The Americans suffered 120,000 casualties.
