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Which of the following was the center source of energy during the industrial a revolution

Which of the following best describes the state of the us economy at the end of world war ii? a it was starting to come out of the great depression. b it was out of the great depression and doing better. c it was one of the most powerful economies in the world. d it was entering another recession.

Which statement best describes a major advantage of a confederal system of government over a unitary system