[ves]

You don’t even have to go back that far; the, uh, productivity of Ghengis Khan and the mongols generally is widely discussed.

[adenozine]

Oh well I mean sure, there's a similar case with colonists and slaves too, right?

I think at some point in the far past though there might have been a wider gap, genetically, between the two forces meeting. I haven't had time to read the whole article in detail, just skimmed it.

Anyhow, thanks. You're right, there's definitely been plenty of mandatory diversification before.