If you in ernest take a look at the whole thing you can clearly see how the culture of states/kingdoms slowly spread from Mesopotamia and China to Europe and India. Only after ~3000 years the Roman empire takes over and spreads this throughout Europe. And then another 1500 years pass until the European hegemony really starts.

Also smaller "cultures" which do not constitute states/kingdoms are shown in the map, albeit without color or borders.

But yeah. Evil Eurocentrism am I right.