World War II officially began with hostilities between what two nations? A. Germany and Poland B. Germany and France C. Japan and the United States D. Japan and China
Germany invasion of Poland was the immediate cause of ww2. The invasion forced Britain and France declaring war on Germany. Britain had signed a protection pact with Poland and therefore saw herself as bound by the contract to protect the country noting that it had not honored similar pacts with Czechoslovakia which had been annexed by the Germans.