>>12690971The UK probably exported a lot of their intelligent people to the US, New Zealand and Australia. Same with with Germany and Argentina/US.
Overall people of French origin are only sparsely found in the US and Northern Canada, they probably contributed the least of any European country to the genetics of their colonies. Thus, it's more likely any intelligent French person would stay in their country, whereas the English/Germans/Dutch in particular lost a lot of people going to the new world.