6: 21/22

Part 6 - The Most Recent Century, 1914 - present 
Part I - CH 21 & 22: European Collapse & Recovery -and- World Communism
Ch 21 - Collapse & Recovery of Europe

The First World War:





Great Depression, Rise of Authoritarian Dictatorships: 
Notes: CH 21 Roaring 20's & Failure of the Versailles Treaty/League of Nations