The maintenance of peace and order in Italy, the defence of the coasts and frontiers, the making of war or peace with foreign Powers, were matters the settlement of which Rome kept entirely in her own hands. Each allied State, in time of war, was called upon for a certain contingent of men, but, though its contingent usually formed a distinct corps under officers of its own, its numerical strength was fixed by Rome, it was brigaded with the Roman legions, and was under the orders of the Roman consul.
The administrative needs of this enlarged Rome were obviously such as could not be adequately satisfied by the system which had done well enough for a small city State with a few square miles of territory. The old centralization of all government in Rome itself had become an impossibility, and the Roman statesmen did their best to meet the altered requirements of the time. The urban communities within the Roman pale, colonies and muni cipia, were allowed a large measure of local self-government. In all we find local assemblies, senates and magistrates, to whose hands the ordinary routine of local administration was confided, and, in spite of differences in detail, e.g., in the titles and num bers of the magistrates, the same type of constitution prevailed. throughout. But these local authorities were carefully subordi nated to the higher powers in Rome. The local constitution could be modified or revoked by the Roman senate and assembly, and the local magistrates, no less than the ordinary members of the community, were subject to the paramount authority of the Roman consuls, praetors and censors. In particular, care was taken to keep the administration of justice well under central control. The Roman citizen in a colony or municipium enjoyed, of course, the right of appeal of the Roman people in a capital case. We may also assume that from the first some limit was placed to the jurisdiction of the local magistrate, and that cases falling outside it came before the central authorities. But an addi tional safeguard for the equitable and uniform administration of Roman law, in communities to many of which the Roman code was new and unfamiliar, was provided by the institution of pre fects (praefecti iuri dicundo), who were sent out annually, as representatives of the Roman praetor, to administer justice in the colonies and inunicipia. To prefects, moreover, were assigned the charge of those districts within the Roman pale where no urban communities, and consequently no organized local govern ment, existed. In these two institutions, that of municipal gov ernment and that of prefectures, we have already two of the cardinal points of the later imperial system of government.