What led world war 1 and 2?
WORLD WAR 1: Immediate Cause: Assassination of Archduke Franz Ferdinand Nationalism Militarism Imperialism Mutual Defense Alliances WORLD WAR 2: There were four immediate causes: Hitler invaded Poland bringing France and Great Britain into the war. Japan took over Manchuria bringing China into the war. Japan attacked the US Fleet at Pearl Harbor bringing the US into the war. Germany invaded the USSR bringing the Soviet Union into the war. On September 1, 1939 Hitler sent troops into Poland after repeatedly being told NOT to try and take over neighboring countries by England and France. On this date they had had enough and formally declared war on Germany September 3, 1939. Here are answers and opinions from WikiAnswers Contributors about the causes of World War 2: Failure of the Treaty of Versailles The treaty signed after World War I treated Germany very harshly and was greatly resented by the German people. The size of Germany’s military was severely restricted. Germany lost territor
