-
President Wilson announces American neutrality in the war.
-
Assassination of Archduke Francis Ferdinard triggers World War 1.
-
The sinking of the Lusitania angers Americans
-
Piosin gas is first used against the Allies.
-
Millions of British, French, and German soldiers die in failed offensives at Verdun and the Somme River.
-
With the Sussex Pledge, Germany promised the United States that U-boats will warn ships before attacking.
-
Germany ends Sussex Pledge and resumes undeclared submarine warware. Wilson declares war and sends the fisrt units of the AEF to France under General Pershing.
-
Revolts in Russia overthrow the czar and bring the Bolsheviks to power.
-
American troops fight at Belleao Wood, Chateau-Thierry, and the Argonne Forest
-
Central Powers agree to a truce with the Allies
-
United States Senate rejects the Treaty of Versailles and membership in the League of Nations as American Soldiers return from Europe.
-
Germany signs the Treaty of Versailles.