Greek IQ vs. Greek Empire

 The greeks tried to build an empire. The macedonians in particular, without question. At the time their native average IQ was 125 (to the nearest 5).

 Long-term result: IQ <90. Loss of more than two standard deviations. Absolute genetic devastation. Empire is ludicrously dysgenic.

 This is not a coincidence. The same thing happened to the romans, and the same thing is happening to the english. Empire-builders reliably remove themselves from the gene pool. At least, remove themselves from world history. E.g. italians play second fiddle in the WWII narrative because italy doesn't have the spiritual mass to cause historical impact. Enervated. Etiolated. They can afford big talk, but nothing more expensive.

 Simple reason: Empire is inherently profane. Devil-worship. Those who engage it are cursed and desecrated, and subsequently the physical converges on the spiritual. Self-mutilation. Often intentional. On purpose.