World War II was the biggest and deadliest war in history, involving more than 30 countries. Sparked by the 1939 Nazi invasion of Poland, the war dragged on for six bloody years until the Allies defeated Nazi Germany and Japan in 1945.
Explanation:
The major causes of World War II were numerous. They include the impact of the Treaty of Versailles following WWI, the worldwide economic depression, failure of appeasement, the rise of militarism in Germany and Japan, and the failure of the League of Nations.
The cause was the treaty of Versailles on Germany after world war 1 which recked its economy but when Hitler came along, saing he could fix it, everyone believed and thats how he came from a citizen To prime minister, to dictator. Italy also was part of it cause even though they won, they were expecting a lot of lang to be gained but they only games a little bit and every one was mad so another facist dictator came along and ruled Italy.
