World War One 

I.  Causes usually discussed by historians

II.  The breakdown of diplomacy

THEN

III.  Imperialism and social imperialism as causes

IV.  The War

V.  Domestic impacts of the war

VI.  Revolutions

VII.  Break up of old empires

    Austria-Hungarian, Russian, Ottoman empires all  broken up into several new countries 

 VII.  The Peace Process