The Via Claudia Valeria was the prolongation of the Via Valeria to its natural termination upon the shores of the Adriatic. During the Republican period the principal lines of communication between Rome and almost every part of Italy were fixed and settled, even if they had not become viae munitae; and so it remained for the Emperors to develop this system and bring it to its logical conclusion. The old Via Valeria linked Rome with Alba Fucens, and, by natural extensions, with the country of the Marsi and the Paeligni. The Emperor Claudius went a step further, and, by connecting the Via Valeria at Cerfennia (Collarmele) with the Mare Superum at the Ostia Aterni (Pescara), not only brought the Paeligni and the Marrucini into direct connection with the capital, but opened up a most important route between the Mediterranean and the Adriatic. With the Paeligni and the Marrucini, through whose territory the Via Claudia Valeria passed, the Romans never had any serious trouble. We first hear of relations between Rome and these people in the middle of the fourth century. No serious hostilities are mentioned and Roman armies appear to have been able to march through their territory without opposition.; In 304 B.C. Rome granted, a treaty to the Marrucini, Marsi, Paeligni and Frentani, all of whom remained generally loyal in aftertimes. The Via Salaria, which, in its mature form, connected Rome with Ausculum and Castrum Truentinum, a point on the Adriatic coast somewhat to the north of the mouth of the Aternus, was of very early origin. To the late Republican period (117 B.C.) belongs the Via Caecilia, which branched off from the Via Salaria in the valley of the Farfa (at the 36th mile) and, after passing through Amiternum, the chief town of the northern Sabini, reached Hadria and the coast.