我提出一个问题:美国是否拥有足够的比别国更多的控制力量、权威或影响,从而在1972年年末以来出现的世界经济环境中决定自己的命运.1972年后,我在对过去200年世界经济史的研究中得出这样的结论:从1972年年末起,世界经济已进入第五个康德拉捷夫上升时期.康德拉捷夫在本世纪二十年代提出资本主义经济存在长周期现象,每个周期大约是40到50年.三十年代中期,他的理论在美国引起经济学家的热烈争论.但在二次世界大战后的大繁荣时期,这种争论停下来 I ask the question whether the United States has more than enough control power, authority or influence over other countries to determine its own destiny in the global economic environment that has emerged since the end of 1972. After 1972, The study of the history of the world economy concludes that the world economy has entered the ascendancy of the fifth Kondrachev from the end of 1972. In the 1920s, Kondratov proposed that there should be a long cycle in the capitalist economy, The cycles are about 40 to 50 years, and in the mid-1930s his theory sparked a heated debate among economists in the United States, but the controversy came to a halt during the post-World War II boom