I was wondering whether or not that was the case, cuz I haven't been able to do it when I'm at the limit even when my chance of success is 80%+. Thanks for clearing it up.
I also wanna mention that when you Loot a captured settlement, as opposed to Occupy or Raze, the slave populations in your provinces increases by as much as 30%. Since I don't see population totals tracked anywhere in-game this may have to do with population surplus? Not sure what affects this. It is mentioned in the Encyclopaedia, but no details as to specifics.
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