Counterfactual history - the good thing is there's no way ofbeing right or wrong.

As for the French and the English - it's not that French slaveowners weren't every bit as capable as the English of appalling behaviour, and the same with the Spanish and Portuguese. But the horror about "miscegenation", in principle if not in practice, seems to have been more of an English thing.

As for "conquered nations that speak French" - well there's Brittany, Corsica, Breize, and for that matter the Languedoc. And that's just at home.