Answer:
World War II was one of the deadliest conflicts in human history, and its causes were complex and multifaceted. In my opinion, the three most influential origins/causes of World War II were the Treaty of Versailles, the rise of totalitarian regimes in Europe, and the policy of appeasement.
The Treaty of Versailles, which was imposed on Germany after World War I, placed severe economic and territorial burdens on the country, which many Germans saw as unjust and humiliating. This resentment contributed to the rise of Nazi propaganda and the eventual election of Adolf Hitler as Chancellor in 1933.
The rise of totalitarian regimes in Europe, such as Nazi Germany and fascist Italy, also played a significant role in causing World War II. These regimes sought to expand their territories and exert their influence, often through aggressive and militaristic means. Hitler's annexation of Austria and his invasion of Poland were clear examples of this expansionist policy.
Finally, the policy of appeasement, which was pursued by European powers in the 1930s, allowed Hitler and other aggressive regimes to expand their territories and pursue their aims without facing significant resistance. This policy ultimately failed, as it allowed these regimes to become stronger and more aggressive, leading to the outbreak of war.
In conclusion, the Treaty of Versailles, the rise of totalitarian regimes in Europe, and the policy of appeasement were all influential causes of World War II. These factors contributed to the rise of aggressive and expansionist regimes, and the failure of international diplomacy and cooperation to prevent the outbreak of war.