In some regions, we now know, cities governed themselves for centuries without any sign of the temples and palaces that would only emerge later; in others, temples and palaces never emerged at all. In many early cities, there is simply no evidence of either a class of administrators or any other sort of ruling stratum. In others, centralized power seems to appear and then disappear. It would seem that the mere fact of urban life does not, necessarily, imply any particular form of political organization, and never did.