[RadioAstronomer]

Most countries as a viable economic and stable government would be toast after a nuclear strike of that magnitude. I was commenting on the viability of the landmass to harbor life in the aftermath. 11 nukes would not have a huge effect on Canada in that regard.

[Lessismore]

Actually, Canada would be in a comparatively good position after an attack. With the cities and their populations gone, it would have a small, widely-dispersed rural population that would be fairly well equipped to survive as agriculturalists and hunter-gatherers. The US, on the other hand, would likely wind up with far too many survivors of the initial attack, and the ensuing disease, famine, organized crime, etc, would be comparatively worse.