Answer: After the Second World War, the US economy emerged as the strongest.
Step-by-step explanation:
The result was partly because the war was not waged in America, so no funds had to be allocated for infrastructure rehabilitation. The fact that the US foreign minister offered economic assistance to the devastated countries of Europe, and even to those with a Soviet course, shows how much the US economy was above the rest.
This event is known in history as the "Marshall Plan". Of course, this assistance was not free, so the United States expanded its economy to the European market and beyond.