I will say its obvious that this will never happen..But heres how itd work
Conventional war:Men against men...China will win because of sheer numbers and good missiles
Nuclear war:USA,obvious no?Heres the reason...China has awful ships and aircraft carriers...This means it cannot use its nuclear to full effect..Wheras america can..So it would (probably) win
Anyways..Why'd you add canada?They wouldn't help much
BTW guys russia is much more likely to start a war than china...China is a good ally when it comes to economy
Who would win,Iraq,China,and North Korea vs.U.S.A.and Canada?
In war?
Let's see...
Iraq: Full of terrorists, they don't attack much places besides Iraq themselves, so if other countries were completely hostile, they'd pretty much die.
China: China has soldier advantage, but their weapons are not that advanced. However much I like them, I'm afraid they don't stand much of a chance.
North Korea: So North Korea beat South Korea. But if they battled the other countries, due to the extreme population different, I doubt it...
USA: It's probably my pick. They have highly trained soldiers, and strong technology, in terms of offense and defense.
Canada: Canada isn't weak, but against USA, it's a no-no.