In official history, only polarization has reached one super and many strong. If we persist in polarization, I think only Germany before World War II. (The evolution is that Germany was defeated in World War II, the United States and the Soviet Union carved up a powerful Germany, scientists went to the United States, and the data fell to the Soviet Union) or China in the Qin and Han Dynasties (when the West was still in a barbaric period)

Polarization to one super and many strong: it is the Soviet Union and the United States, which evolved into the disintegration of the Soviet Union. A superpower refers to the United States, and a superpower refers to Western Europe (Germany, France, Britain, etc. ), Russia, Japan, and the rapidly rising third world countries (BRIC countries such as China and Brazil).