The document discusses several key events related to World War II:
1. It outlines some of the unfair terms imposed on Germany by the Treaty of Versailles after WWI, which helped lead to the rise of dictatorships in Germany and Italy in the 1930s.
2. It describes Hitler's rearmament of Germany in violation of the treaty and Mussolini's buildup of military forces in Italy in the early 1930s.
3. It summarizes Hitler's annexation of Czechoslovakia in 1938 despite appeasement by Britain and France, and Germany's invasion of Poland in 1939 which marked the start of WWII.