Hey!
The answer is definitely C. because it is a no brainer question.
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Manufacturing industries help in the war effort by providing military equipment for the war.
<u>Explanation:</u>
The industries which were manufacturing industries were very important for the war in the United States of America. The reason for this is that the industries were used to provide the military equipment which were to be used in the war by the military men. The manufacturing industries provided around 297000 aircraft, 86000 tanks, trucks, many artillery pieces for the war.
Economic sanctions and military force
During the World War II, many Americans helped in the productions of arms. Many women during this time were empowered to work in factories. The government had encouraged its citizens to save and recycle their scraps metals for arms production.