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 are assassinated by Gavrilo Princip, a Serbian Nationalist.
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
Allied vs. Central Powers
New technologies of war n Trench warfare
Poison (mustard) Gas
Machine gun
Tank
Submarine (or U-boat in Germany)
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 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
Germany had warned us
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
In this note…. n Germany asks Mexico for support in exchange for helping Mexico get back territories lost to the US