The condition for success in the American case was that the US raised its own revenue, with federally administered customs houses initially providing the bulk of its receipts. The logic of a need for specific revenue applies also in modern Europe, where a reformed fiscal system might include common administration of value-added tax (with the additional benefit of eliminating a considerable amount of cross-border fraud).
美国能够成功的条件在于它能获得收入——美国拥有联邦管辖的海关，建国初期，财政收入的大头都来自关税。这一逻辑——需要具体的收入流——同样适用于现代欧洲，改革后的财政体系可以包括一个共同的增值税机构（这样做还有额外的好处，比如消除数量巨大的跨国欺诈）。