Year 2100: North Korea angers the world by testing nukes.
USA finally does something about it and invades.
China joins North Korean side.
South Korea joins USA (not that it means much).
World War III envelops.
The populous China emerge as the winner, mutated from the nuclear fallout.
This post (hereafter referred to as "The text") pleases me, although not in the conventional sense. As such, I feel obligated to disect it part by part:-
Point One: North Korea has already angered the world through the testing of "nukes", and thus far, very little has been done, although Kim has received the "condemnation of the UN :rofl:.
Point Two: The USA have nothing to gain from invading such a third world shit hole.
Point Three: Given that the Chinese have expressed (implicitly) the creation of an Eastern Bloc, they are more likely to destroy the upstart state of North Korea.
Point Four: I assume you actually mean
develops, but given the fallacy of your previous points, this is rather irrelevant
Point Five: Despite the mention of Mutating Fallout (or perhaps because of it) your final point makes the most sense. China is populous. China will win. Anyone who voted otherwise on the above poll should be tarred and feathered.