I alluded a moment ago to the smallness of the units with which the imperial policy of Sparta and Athens had to deal. Before proceeding in the latter part of this chapter to trace the development of the forms by which imperialism was obscured, evaded, and ultimately justified in Greece, I should like to try to make clear the qualities which rendered the little Hellenic communities so hard for imperial digestion. In classic Greece, as in renascence Italy, the city was the state. It had not always been so; for in the past the land had been at one time in the possession of rudimentary nations, called _ethne_. But in the classic epoch these loose organisms persisted only in certain backward regions in the west and north. Elsewhere city-states had everywhere made their appearance as early as the sixth century B.C. The circumstances in which these city-states arose are shrouded in the mystery which surrounds most beginnings. They, accordingly, present all the better opportunity for the construction of a theory; and perhaps the theory which had once the greatest vogue is that enunciated by Fustel de Coulanges in his brilliant book on _The Ancient City_. Of its main propositions, however,--that each city-state came into being at a single moment; that it was an artificial structure deliberately modeled on the preëxistent family; that the family was a religious association created and organized for the worship of ancestors; that the spirits of ancestors were the first gods, or, indeed, were gods at all,--not one has stood the test of a searching inquiry. On the contrary, it seems established that the city-state was the result of a natural growth, and that the incidents which accompanied its development, while varied and numerous, were all manifestations of political progress. Growth in the direction of a large number of distinct states was natural in Greece in view of the well-known physical features of the country; but the study of geography does not explain why these states were cities. For the true explanation of this phenomenon we must not confine our observation to Greece. Broadly speaking, high culture is everywhere city-bred, and the cities have regularly been the leaders in political development. In Babylonia that was the case, though the urban centres there were dominated from a very early date by Semitic tribes from the desert. Free cities, like Tyre and Sidon, were the prime sources of Phoenician enterprise. The home of Roman law and government was a city, and when Italy led the world a second time, she was a complex of city-states. The Hanse towns and the Flemish communes, the chartered cities of England and France, acquired political liberty or political rights long before the rest of Central Europe. Where, in fact, the cities have not been the mother, and the territorial states simply the foster-mother, of freedom and culture, exceptional conditions have existed--such as