The answer is most likely D. Refused aid to any nation at war. If the U.S. remained neutral, it would not have to worry about going to war/being attacked by a nation at war with another.
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Antonie Philips van Leeuwenhoek FRS was a Dutch businessman and scientist in the Golden Age of Dutch science and technology. A largely self-taught man in science, he is commonly known as "the Father of Microbiology", and one of the first microscopists and microbiologists.
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Limited business affair control through the government and social reform
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