The document outlines the key events leading up to the start of World War 2 in September 1939. It discusses how the harsh Treaty of Versailles punished Germany after WWI, leading to the rise of Adolf Hitler who vowed to rebuild Germany's military. Hitler began taking over surrounding lands, and the policy of appeasement by Britain and France failed to stop further German aggression. The League of Nations also proved ineffective at resolving territorial disputes, culminating in Germany's invasion of Poland and the start of World War 2.