World War I 1914 1918 Causes of the

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World War I 1914 -1918

World War I 1914 -1918

Causes of the war (long-term) Nationalism n Imperialism n Militarism n Alliance System n

Causes of the war (long-term) Nationalism n Imperialism n Militarism n Alliance System n

Immediate cause of the war n Archduke Franz Ferdinand his wife of Austria. Hungary

Immediate cause of the war n Archduke Franz Ferdinand his wife of Austria. Hungary are assassinated by Gavrilo Princip, a Serbian Nationalist.

Allied Powers § Great Britain § France § Italy § Russia (pulled out of

Allied Powers § Great Britain § France § Italy § Russia (pulled out of the war in 1917) § US (entered in 1917)

Central Powers n Germany n Austria-Hungary n Ottoman n Bulgaria Empire

Central Powers n Germany n Austria-Hungary n Ottoman n Bulgaria Empire

Allied vs. Central Powers

Allied vs. Central Powers

New technologies of war n Trench warfare

New technologies of war n Trench warfare

Poison (mustard) Gas

Poison (mustard) Gas

Machine gun

Machine gun

Tank

Tank

Submarine (or U-boat in Germany)

Submarine (or U-boat in Germany)

Airplane l l Manfred von Richthofen—Red Baron Edward Rickenbacker —American Ace

Airplane l l Manfred von Richthofen—Red Baron Edward Rickenbacker —American Ace

The US tried to stay neutral, but… l We lent money to the Allies

The US tried to stay neutral, but… l We lent money to the Allies l Germany created a blockade around Britain and sank boats with any supplies we tried to give the Allies l Britain also created a blockade around Germany, starving about 750, 000 civilians

May 7, 1915—Germany sinks the Lusitania, killing 128 Americans

May 7, 1915—Germany sinks the Lusitania, killing 128 Americans

Germany had warned us

Germany had warned us

FURTHER EVENTS § Sussex is attacked in March 1916 § Germany makes Sussex Pledge,

FURTHER EVENTS § Sussex is attacked in March 1916 § Germany makes Sussex Pledge, promising to warn ocean liners before attacking them § Germany resumes full-scale (unrestricted) U-boat warfare in February 1917

Zimmermann Note, March 1917

Zimmermann Note, March 1917

In this note…. n Germany asks Mexico for support in exchange for helping Mexico

In this note…. n Germany asks Mexico for support in exchange for helping Mexico get back territories lost to the US

US enters the war—April 6, 1917

US enters the war—April 6, 1917