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.

You say "culture of states slowly spread from Mesopotamia to Europe" but what template defines a "state"?

The Kingdom of Kush existed for 3,000 years. Aksum controlled Red Sea trade. Great Zimbabwe built massive stone cities. Yet the map leaves them blank because they don't fit the Mesopotamian-Roman model of what states should look like.