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I think is A or B
Answer:
The answer is allows people to make new discoveries through oderly research.
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Answer:
The Vietnam War was a long, costly and divisive conflict that pitted the communist government of North Vietnam against South Vietnam and its principal ally, the United State.
Research scientists used a standard practice called the scientific method to help them understand phenomena.
Answer:
Herbert hoover important in WWI because When the U.S. entered the war, President Woodrow Wilson appointed Hoover to lead the Food Administration, and Hoover became known as the country's "food czar". After the war, Hoover led the American Relief Administration, which provided food to the inhabitants of Central Europe and Eastern Europe.
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