Does it seem to anyone else that they have conflated "civilization" and "political entity" for lack of a better term? Serious question. It just seems that a lot of entries on this list are actually part of the same civilization. In the same way that I would consider the Spanish Empire, the British Empire, and the American Empire to be really all a part of the same Western Civilization. But maybe my thinking is totall…
No matter how you define or name these things, your definitions will still be arbitrary. Polity. Empire. Civilization. It's like defining species, or musicals genres. There's obviously a there there, but it's not discreet. Civilization or polity don't really have discrete meanings or beginning/end dates. Did Cyrus' civilization really end when Alexander beat the Persian imperial armies? Most of the political structur…
To be clear, the world did not switch uniformly from one mode to the other. In the Nile and Yangtze valleys, for example, civilization has persisted through several millennia of political change. Cyrus' empire did end with Alexander's invasion, but the underlying civilization of the region remained.