>>8286004>For 1 country the size of a middling US state.Germany had the world's second largest industrial capacity when the war broke out and the resources of the entirety of continental Europe either through allies (Italy, Hungary, Romania, Finland, Spain), occupied territory (France, the Low Countries, Denmark-Norway, Serbia) or puppets (Croatia, Slovakia, Czechia) when it went to war with the USSR. Lend-Lease helped, but the USSR consistently had far fewer resources than Germany did and actually not that much greater population. Germany had five times the USSR's coal production, over three times its iron production, three times its GDP, three times its steel production, twice its electricity production, and four times its explosives production. Yet they could not win.
When a similar disparity in resources presented itself in mid 1943 with the Germans on the other side, when the U.S. and British entered the conflict in earnest by making landfall in Europe and stepping up the air war (while the U.S. was still devoting about half its attention to Japan mind), the Germans lost overwhelmingly inside of two years.