1945 was the year the “New World Order ” came into being. The new bi-polar world of the Communist block led by the Soviet Union vs the Capitalist block led by the USA.
The Germans and Japanese had been defeated in their attempt to becoming major powers and reorder the world to their liking and the productive capacity of the USA and Soviet Union came to the fore and defeated the axis powers.
Germany although fighting well was no match for the Allies and was crushed and destroyed. A thing that has ramifications to this day.
The Soviet Union doing the heavy lifting of the war survived but was badly damaged.