<span>Quakers (or Friends) are members of a group of religious Christian movements which is known as the Religious Society of Friends in Europe, Australia, New Zealand and parts of North America; and knownas the Friends Church in Africa, Asia, South America and parts of the US.</span>
For one, the Allies had an EXTREMELY massive amount of production, which the German's desperately lacked around the end of Operation Barbarossa in the East.
Also, relating to production, the German's air force (The Luftwaffe) and Naval forces were essentially non-existent by the time the Americans landed in Sicily, but the Allies had a surplus of air assets (specifically bombers and Airborne infantry) which solidified an Allied victory in Europe.
Answer Defeat in the Crimean War exposed Russia's lack of development in relation to its European neighbors.