The document provides information on several key historical events and periods:
1. World War I ended with the Treaty of Versailles which imposed harsh terms on Germany including war reparations, land losses, and military restrictions. Germany struggled economically in the aftermath which contributed to the rise of totalitarian regimes.
2. The Great Depression started with the U.S. stock market crash of 1929 and led to worldwide unemployment of 25-30% as well as increased government intervention in economies. In response, U.S. President Franklin D. Roosevelt created programs like the WPA and Social Security under the New Deal.
3. Adolf Hitler and other totalitarian rulers like Mussolini and Stalin rose to power amid these difficult economic times by promoting