The old world has outlived its usefulness and decided to commit suicide by starting a nuclear war. Someone or something omnipotent showed the monkeys with the red cookie button and sent all of humanity to a new planet, simultaneously taking away all the benefits of civilization. Welcome to the new Middle Ages! Yes, by the way, here you still have an unknown number of the same assholes from other races who destroyed their worlds, the System - to equalize the chances and parting words that the planet will get only one civilization. Good luck, Relokant!