Greece is a federal city, each city is an independent slave country, and there is no unified political system. The so-called Greek civilization is an all-encompassing civilization, such as Athens civilization, Troy civilization, Sparta civilization and so on. It pays more attention to philosophy, mathematics, astronomy and other sciences, and is generally more advanced.

Roman civilization was more complicated. Generally speaking, we seem to be talking about the first Roman Empire and the former Roman Republic. Rome is unified in political system and implements federal democracy. It advocated and practiced the concept of democracy earlier. Its political system is very similar to that of the United States today. Compared with Greek civilization, Rome is a powerful country. However, civilization lags far behind Greece. So Roman civilization was inherited from Greece. This is similar to the Yuan and Qing Dynasties in ancient China. Ancient Rome was greatly influenced by Sparta, who advocated will and had the potential prototype of idealism philosophy. In addition, the vast territory of Rome makes Roman civilization more diverse, including inheriting and absorbing Greek civilization, Carthage civilization, Phoenician civilization, Germanic civilization, Egyptian civilization and even early Christian civilization.