Which of these would have had the greatest impact on the expansion of the economy of the Roman Empire

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answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

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answer; during stalin"s rule, many mothers told their children that he was the greatest thing to ever happen to russia;