Causes + Outbreak
Major warring alliances
Warfare strategies + tactics
New technology + weaponry
Post-war diplomacy + outcomes
100

Militarism

political orientation to maintain a strong military force

100

Central powers

Alliances of Germany, Austria-Hungary, and opposing nations

100

Schlieffen Plan

German strategy to avoid a two-front war

100

Mechanized Warfare

Warfare relying on gasoline/diesel powered machines

100
Paris Peace Confrence
Meeting of leaders to resolve the war
200

Alliances

Agreements between nations to protect each other

200

Triple Entente

Pre-war alliance between Britain, France, and Russia

200
Trench Warfare

Fighting from trenches dug in the battlefield

200

Airplanes

Used for reconnaissance, bombing and ground support
200

Treaty of Versailles

Final peace treaty imposing terms on Germany

300

Imperialism

Strong nations dominating other countries politically and economically

300

Kaiser Wilhelm II

Aggressive leader of Germany during the war

300

No Man's Land

Dangerous territory between rival trenches

300

Machine Guns

High-velocity weapons causing massive loss of life

300

War Guilt Clause

Treaty clause blaming Germany for the war

400

Nationalism

Extreme sense of national pride

400

Czar Nicholas II

Russian monarch overthrown during the war

400

Blockade

Cutting off areas to stop enemy supplies

400

Tanks

Heavy armored vehicles built to cross trenches

400

League of Nations

Post-war international peace organization

500

Archduke Franz Ferdinand

Heir whose assassination sparked the war

500

Woodrow Wilson

American president during World War I

500

Unrestricted Submarine Warfare

German policy of sinking any vessel

500

Mustard Gas

Toxic chemical weapon causing severe blisters

500

War Reparations

Financial payments demanded from Germany