World War I

Franz Ferdinand Assassination

Jun 28, 1914

Archduke Franz Ferdinand and his wife were assassinated while visiting Sarajevo, Bosnia. He was next in line for the Austro-Hungarian throne. The killings set off decades old tensions in Europe and started WWI

Austria-Hungary and Serbia

Jul 28, 1914

Austria-Hungary declares war on Serbia

First use of a gas weapon by the Germans

Apr 22, 1915

The Germans were the first to use a gas weapon

Sinking of the Lusitania

May 7, 1915

A torpedo from the germans sunk the Lusitania with 128 american passengers on board

Wilson reelected; pledged American neutrality

Nov 7, 1916

Wilson was reelected and he pledged neutrality to World War I

Zimmerman note

Jan 19, 1917

The Zimmerman note was a telegram that was sent from the German Ambassador to Mexico

US declares war

Apr 6, 1917

The USA entered WWI

Bolsheviks led by Lenin overthrow Russian government

Nov 7, 1917

Vladimir Ilyich Lenin overthrew the provisional government of Alexander Kerensky

WWI ended

Nov 11, 1918

The Great World War I ended

The Treaty of Versailles

Jun 28, 1919

This treaty ended the state of war between Germany and allied powers.