The name Barbaria for the mountainous district in the east centre of Sardinia, in the district of Nuoro, which still exists in the form Barbargia, goes back to the Roman period, the civitates Barbariae being mentioned in an inscription of the time of Tiberius (Corp. inscr.
P. Sextilius, pro praetor Africae, according to coins of Hadrumetum of the year 94 B.C. The towns which had fought on the side of the Romans during the Third Punic War were declared civitates liberae, and became exceedingly prosperous.
Utica became a Roman colony under Hadrian, and the civitates liberae, municipia, castella, pagi and turres were peopled with Latins.
He enjoyed a triple wergeld, but had no definite salary, being remunerated by the receipt of certain revenues, a system which contained the germs of discord, on account of the confusion of his public and private 1 The changing language of this epoch speaks of civitates, subsequently of pagi, and later of comitatus (counties).
The control which he began in this way to exercise, both in Italy and in the provinces, over the "municipia" and "liberae civitates," by means of agents entitled (then or later) "correctores civitatium liberarum," was carried continually farther and farther by his successors, and at last ended in the complete centralization of the government.