The United States and the Soviet Union gained most from World War II.
Explanation:
The war strengthened the position of the United States, that began in World War One. A growing international monetary system was formed by the 1944 Bretton Woods accord. It substituted the gold standard as the global currency, with the U.S. dollar. Because it became the only nation with the ability to print dollars, it constructed an image of superpower. The Soviet Union on the other hand took lead at the Eastern front. It made communism popular in the eastern European countries which were freshly liberated from German rule. therefore the two become the most economically prosperous countries after the Second World War.
