Answer:
How did Congress ensure that the military had enough troops to fight the war? They created the selective service system. What federal agencies help to control American industries during the war? (WIB) war industries Board; they coordinated the production of war materials.
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Answer: The reason for this became clear after whistleblower Christopher Wylie revealed that the Trump campaign’s data analytics team, Cambridge Analytica, used personal information taken without authorisation in early 2014 to build a system that could profile individual U.S. voters, in order to target them with personalised political advertisements.
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i think the answer may be, B