Causes, military course, and consequences of WWI
The Russian Revolutions of 1917
Paris Conference, Versailles Treaty
After-effects of War and colonialism
The Great Depression: causes and worldwide consequences
International Communism
International Facism
Liberal Democracies in Danger
Origins and Responsibilities for WWII
WWII: Geography, Leaders, Military Factors & Turning Points
The Human Toll of 20th Century Wars & Genocide

Additional Reference on this topic:
The Complete Versailles Treaty online

 

Paris Conference, Versailles Treaty; aims and conflicts of divided allies

National leaders assembled at the negotions over the Treay of Verailles, Paris, 1919. From Left to Right: David Lloyd George, Italian Foreign Minister Sonnino, Georges Clemenceau, and Woodrow Wilson. Source: http://ac.acusd.edu/History/text/versaillestreaty/vercontents.html