The world that I'm creating is Indian mythology based but based in a post apocalyptic earth. (You know, the usual, nuclear war... World population gone, only 2-5% left).
Now the thing is that, since the setting is Indian mythos, I would require a bulk of the surviving people to be present in the Indian subcontinent (there will be wars and everything). I am not sure how to justify that of the people left, major are in the Indian subcontinent...
Note that the "gods" are actually aliens who have watched us annihilate ourselves and have stepped in after the war to help and control India. They follow strict rules of not to interfere with planetary affairs (at least until the natives wipe themselves out).
If I acknowledge the other countries, then I've to justify why they are not getting involved in this... And that list could also be substantial.
One of the solutions that I could think of was to have something happen to the world that rendered most part of the planet inhabitable or inhospitable to humans but let the Indian sub to be the only place they can survive but that also seems far fetched.
So can anyone help me justify as to why the setting is localized in a certain part of the world ?