cepts to focus on to study for an essay/open-ended exam covering from Europe's position prior to World War I to the Rise of Hitler in Germany in 1933?...

What are some key concepts to focus on to study for an essay/open-ended exam covering from Europe's position prior to World War I to the Rise of Hitler in Germany in 1933?

The topics discussed through lectures were:

• Europe in 1914 (The Position of Europe, Political systems and Mass Movements)
• The Coming of War (Pre-WWI, Political background, July Crisis of 1914)
• The First World War 1914-1918
• The Russian Revolution/The War's End
• The Rise of Facism/The Great Depression/The Rise of Hitler