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Advantages. Some historians have suggested that two-party systems promote centrism and encourage political parties to find common positions which appeal to wide swaths of the electorate. It can lead to political stability which leads, in turn, to economic growth.
Some viewpoints of the federalists were they had a loose interpretation on the constitution, they wanted a strong central government, and thought people were selfish. Anti- federalists had a strict interoperation on the constitution, they wanted to limit the control of the government, and thought all people were basically good.