Challenge: With a POD of at least during Cuban Missile Crisis, Dismantle all nations and turn them into at least 500 micro-states, city-states etc. You can use nukes.
A nuclear war in the 70's or 80's could cause annihilation that would cause the splintering of human society into micro states, however I'm not sure how that would come about.
This would most likely cause outright extinction, wouldn't it?
This would most likely cause outright extinction, wouldn't it?
Not if the meteorite was small enough.