What Failures helped lead to World War 2?

Several key failures contributed to the outbreak of World War II. The Treaty of Versailles, which ended World War I, imposed harsh penalties and reparations on Germany, fostering resentment and economic hardship that facilitated the rise of Adolf Hitler. Additionally, the League of Nations proved ineffective in preventing aggression from countries like Italy and Japan, and the policy of appeasement adopted by Britain and France allowed Axis powers to expand unchecked. These failures created a volatile environment that ultimately led to the conflict.