The overwhelming majority of successful civilizations throughout history have been nation-states, at least to some degree,
The vast majority of unsuccessful ones have been ethnostates, as well, because the vast majority are ethnostates … on average, ethnostates are average.
Indeed, large empires tend to be authoritarian rather than democratic, and few people use this as an argument for why authoritarianism is intrinsically better than democracy.
The vast majority of unsuccessful ones have been ethnostates, as well, because the vast majority are ethnostates … on average, ethnostates are average.
I spoke of greatness, not goodness.