大历史学家 NIALL FERGUSON 2004 年的著作Colossus The Rise and Fall of the American Empire 精确预见了美帝邪恶本质！川普上台明牌了！

In yet another, narrower definition, the hegemon’s principal function in the twentieth century was to underwrite a liberal international commercial and financial system. In what became known, somewhat inelegantly, as hegemonic stability theory, the fundamental question of the postwar period was how far and for how long the United States would remain committed to free trade once other economies, benefiting from precisely the liberal economic order made possible by U.S. hegemony, began to catch up. Would Americans revert to protectionist policies in an effort to perpetuate their hegemony or stick with free trade at the risk of experiencing relative decline? This has been called the hegemon’s dilemma, and it appeared to many writers to be essentially the same dilemma that Britain had faced before 1914.