World War I

Archduke killed

Jun 28, 1914

The assassination of the Frank Ferdinand Archduke of Austria, leading up to the World War I.

Austria-Hungary declares war on Serbia

Jul 28, 1914

Austria-Hungary was ready to declare war on Serbia after the Serbian nationalist; Gavrilo Princip assassinated the archduke of Austria; Franz Ferdinand

First use of gas as a weapon by the Germans

Apr 22, 1915

Germany attacked two French colonial division at Ypres, Belgium using more the 150 tons of lethal chlorine gas

Sinking of the Lusitania

May 7, 1915

A British passenger liner that was torpedoed by the Germans.

Wilson reelected; pledged American neutrality

1916

Wilson decides to be neutral because favored countries and their families came from Europe.

Zimmerman Note

1917

Arthur Zimmermann sent sent a telegram to a German ambassador in Mexico. The note said to attack the US. The British intercept the note and show it to Wilson.

U.S. declares war

1917

The United States decided to join the war after the Russian revolutions, Germany's unrestricted submarine warfare, and the Zimmermann Note.

Bolsheviks led by Lenin overthrow Russian government

1917

Th Russian revolution was when Vladimir Lenin and the Bolsheviks overthrew the Czar of Russia Nicholas II.

War ends

Nov 11, 1918

The ended with Germany and Allies signing an armistice.

Treaty of Versaillies

Jun 28, 1919

The treaty that ended the war between Allied Powers and Germany. Made Germany accept full responsibility for conflict, pay the allies billions of dollars, give up its overseas colonies and some territory in Europe, and disarm completely. The United States, Germany, and China don't sign the treaty.