The options of the question are:
A. state government and armed forces
B. labor and business
C. the allies and axis powers
D. the president and congress
The correct answer is B) Labor and Business.
The two groups cooperated with the government to switch from peacetime to wartime production were labor and business.
The government had a much more easy transit to peace after the war with the help of labor and business. These groups cooperated with the government creating jobs and giving opportunities to the people after the struggle. These new opportunities made Americans occupy themselves in something productive and foment peace in those times.
