Let's pretend there were a nation of clones with an economy based on coal-mining. One day the demand for coal drops to zero and this spells economic doom. No ma

Let's pretend there were a nation of clones with an economy based on coal-mining. One day the demand for coal drops to zero and this spells economic doom. No matter that they're all clones; the angry citizens, looking for scapegoats, will divide society by zip code or gender or birth-date, and clash over that. People 'descend into tribal politics' when they feel the outlook for their society is worsening. That is the driving force that determines whether society considers itself homogeneous. People accept most any system of government when there is optimism in the air.