After the so-called "Golden Age" of the strong and durable economic prosperity in the 1960s, the New York World Trade Center and the Sears Tower in Chicago began to be constructed.

在经历了被美国人称之为“黄金时代”的20世纪60年代强劲、持续的经济繁荣后，纽约的世贸中心和芝加哥的西尔斯大厦开始兴建。