npub19fywau9ff6pjmjek7k4kukgdcdf7w4chne57upj5s7y87gk7v27qx7n5nv (npub19fy…n5nv) ✙ dcc :pedomustdie: :phear_slackware: (npub1lar…q5vr) npub1vge34mmjxcn9hh6mxnfs2c6405n6dgemtw4753f5q5h6r4yq3g0s2awxqy (npub1vge…wxqy)
Well now you've made the distinction of a first-world, thriving civilization. The "1st/2nd/3rd-world" distinction is from the Cold War and also makes no distinction for the quality of a culture but of their economy and form of governance, by that metric many of the civilizations you consider great were not even first-world.
You're using words incorrectly again. While civilizations can be made up of a single ethnicity, culture, or religion, empires ARE inherently diverse. That said, the diversity of an empire is typically a significant factor in their failure. But statistically speaking most land in the word was part of an empire at one point, which means no inference can really be made from whether an empire once stood there or not. I can't even think of a first-world country where there wasn't once an empire.
Uncivilized people are also incapable of being diverse because there is no incentive to cohabitate with their outgroup, and a lack of a system compelling them to cooperate with others. I actually do think diversity is inherently destructive for a society, but it sounds like you're just using it as a buzzword. The people living in mudhuts are more ethnically and culturally homogeneous than any civilization, by your theory they should have formed the greatest civilization ever. Even though it's also incorrect, maybe you should go back to blaming the state of the world it on people with low IQs.