In which of the following categories did the United Stated become a world leader after World War I?
A. Banking
B. Industry
C. Business
D. All answers are correct
D Although the U.S. had ramped up its industry during the first world war, it still did not have its full industrial capacity maximized until 1942 during world war 2. It was not "the" world leader in industry, however it was on the top of the list
