How did the rise of dictators contributed in the outbreak of world war 2?

The rise of dictators in the 1930s, particularly Adolf Hitler in Germany, Benito Mussolini in Italy, and militaristic leaders in Japan, contributed to the outbreak of World War II by promoting aggressive nationalism and expansionist policies. These regimes rejected the principles of the Treaty of Versailles and sought to revise territorial boundaries through military conquest. Their actions, including the invasion of neighboring countries and the pursuit of imperial ambitions, destabilized Europe and Asia, prompting a failure of diplomacy and leading to the eventual outbreak of war in 1939. Additionally, the appeasement strategies employed by other nations allowed these dictators to grow more emboldened in their aggression.