World War I

Date: 1914-1918
Causes: Nationalism, Imperialism, Militarism, Alliances
Main Countries Involved:
- Allied Powers: France, Russia, UK, Italy, USA
- Central Powers: Germany, Austria-Hungary, Ottoman Empire
Key Events:
- Assassination of Archduke Franz Ferdinand (1914)
- Battle of the Somme (1916)
- Russian Revolution (1917)
- Entry of the USA (1917)
Trench Warfare: Dominant form of combat
Technological Advancements: Machine guns, tanks, chemical warfare
Outcome:
- Treaty of Versailles (1919)
- End of Empires: Ottoman, Austro-Hungarian, Russian, German
Casualties: Over 16 million dead and 20 million wounded
Impact:
- Economic Devastation
- Political Changes: Rise of communism, fascism
- League of Nations: Formed to prevent future wars

Key Figures