 Ten years after the official end of the zombie war , millions of zombies are still active , mainly on the ocean floor or on snow line islands . A democratic Cuba has become the world 's most thriving economy . Following a civil war that saw use of nuclear weapons , China has become a democracy and is now known as the " Chinese Federation " . <unk> is freed from Chinese rule and hosts <unk> , the world 's most populated city . Following a religious revolution and the revival of Russian <unk> , Russia is now an <unk> <unk> known as the Holy Russian Empire . Owing to the fact that many young Russians either became zombies , were infected with HIV , or died due to drugs , the government has initiated a " breeding " program , with the remaining fertile women implied to be <unk> impregnated to raise the <unk> . North Korea is completely empty , with the entire population presumed to have disappeared into underground bunkers . 
