The departure of Pyrrhus left the Lucanians and other Italian tribes exposed to the full power of Rome. They nevertheless continued the hopeless struggle a little longer; but in B.C. 272 Tarentum fell into the hands of Rome, and in a few years afterward every nation in Italy, to the south of the Macra and the Rubicon, owned the supremacy of Rome. She had now become one of the first powers in the ancient world. The defeat of Pyrrhus attracted the attention of the nations of the East; and in B.C. 273, Ptolemy Philadelphus, king of Egypt, sent an embassy to Rome, and concluded a treaty with the Republic. The dominion which Rome had acquired by her arms was confirmed by her policy. She pursued the same system which she had adopted upon the subjugation of Latium, keeping the cities isolated from one another, but at the same time allowing them to manage their own affairs. The population of Italy was divided into three classes. _Cives Romani_, _Nomen Latinum_, and _Socii_. I. CIVES ROMANI, or ROMAN CITIZENS.--These consisted: (1.) Of the citizens of the thirty-three Tribes into which the Roman territory was now divided, and which extended north of the Tiber a little beyond Veii, and southward as far as the Liris; though even in this district there were some towns, such as Tibur and Praeneste, which did not possess the Roman franchise. (2.) Of the citizens of Roman colonies planted in different parts of Italy. (3.) Of the citizens of municipal towns upon whom the Roman franchise was conferred. In some cases the Roman franchise was granted without the right of voting in the Comitia (_civitas sine suffragio_), but in course of time this right also was generally conceded. II. NOMEN LATINUM, or the LATIN NAME.--This term was applied to the colonies founded by Rome which did not enjoy the rights of Roman citizenship, and which stood in the same position with regard to the Roman state as had been formerly occupied by the cities of the Latin League. The name originated at a period when colonies were actually sent out in common by the Romans and Latins, but similar colonies continued to be founded by the Romans alone long after the extinction of the Latin League. In fact, the majority of the colonies planted by Rome were of this kind, the Roman citizens who took part in them voluntarily resigning their citizenship, in consideration of the grants of land which they obtained. But the citizen of any Latin colony might emigrate to Rome, and be enrolled in one of the Roman tribes, provided he had held a magistracy in his native town. These Latin colonies--the _Nomen Latinum_--were some of the most flourishing towns in Italy. III. SOCII, or ALLIES, included the rest of Italy. Each of the towns which had been conquered by Rome had formed a treaty (_foedus_) with the latter, which determined their rights and duties. These treaties were of various kinds, some securing nominal independence to the towns, and others reducing them to absolute subjection.