Which of the following did the United States produce more of during World War II than Germany, Japan, and Italy combined?

aircraft

automobiles

bombs

uniforms

The correct answer is Aircraft

The modern United States army had always paid great attention to its airforce and it has been used by them more than any other country in the world. What was started in that era still can be seen today as the US has aircraft carriers more than others do and they still have a developed airforce that is unrivaled by any country.