"Let's put it this way: Would you rather enslave Canadians or Russians?"
Russians. Of course Russians. I would go full Barbarossa on them, but with way better supply lines and fuck France, I just wanna conquer Russia.
Of course it would be bonkers hard - Canada would be way easier IMO. In terms of climate difficulties both countries seem pretty similar, but in terms of the enslavement of the people it would be like enslaving a wolf vs enslaving a rabid badger. I mean the wolf would fight and all but in the long run it could be done, you could keep it in a cage, treat him well, feed him and heck, he might not even kill you at the first chance. The rabid badger on the other hand would just go full berserk mode until either you run away so far the badger doesn't see you, it kills you, you kill it, or (my favourite) you beat it with a stick for so long it is physically incapable of movement any more. Plus why would you want to enslave Canadians? They are awesome! Definitely in my top 3 nations. Russians on the other hand... I mean I can already see all the work camps, St. Petersburg burning, Kremlin destroyed. Hordes of starved people marching south fleeing winter because first thing I'd bomb in each bigger city would be the power power plant. Basically I think our best bet would be to relocate all men 15-65 yo into those huge colonies as far north as possible. Of course, millions would perish but hey, that's what you've gotta do, right? On the plus side you could release lots of dominions from the Russian Federations that would more or less take care of themselves, why you focus on the ethnic Russians...
Wait, at what point if I keep going am I actually starting to plan genocide?