Answer:
more-integrated societies allowed them to totally mobilize for war, while the conservative, even reactionary attitudes of the Nazis and the Japanese ensured that they lost. In World War II, the Allies outfought the Axis on land, in the air, and at sea. In 1944, the Luftwaffe lost large numbers of planes responding to American air raids, partly because the fighter ultimately developed to guard the long-range bombers, the North American P-51 Mustang, was superior to German interceptors. Since the Germans had not increased their training programs in 1940-42, by 1943 they were finding it difficult to replace pilots, and in any event the Luftwaffe could not afford fuel for training pilots. By the time of the Normandy landings, the Germans had already lost the air war.