In like manner the Carthaginians already at the end of the second century of Rome established themselves in Sardinia, which was utilized by them precisely in the same way as Libya. While the natives withdrew into the mountainous interior of the island to escape from bondage as agricultural serfs, just as the Numidians in Africa withdrew to the borders of the desert, Phoenician colonies were conducted to Caralis (Cagliari) and other important points, and the fertile districts along the coast were turned to account by the introduction of Libyan cultivators. Sicily Lastly in Sicily the straits of Messana and the larger eastern half of the island had fallen at an early period into the hands of the Greeks; but the Phoenicians, with the help of the Carthaginians, retained the smaller adjacent islands, the Aegates, Melita, Gaulos, Cossyra--the settlement in Malta especially was rich and flourishing--and they kept the west and north-west coast of Sicily, whence they maintained communication with Africa by means of Motya and afterwards of Lilybaeum and with Sardinia by means of Panormus and Soluntum. The interior of the island remained in the possession of the natives, the Elymi, Sicani, and Siceli. After the further advance of the Greeks was checked, a state of comparative peace had prevailed in the island, which even the campaign undertaken by the Carthaginians at the instigation of the Persians against their Greek neighbours on the island (274) did not permanently interrupt, and which continued on the whole to subsist till the Attic expedition to Sicily (339-341). The two competing nations made up their minds to tolerate each other, and confined themselves in the main each to its own field. Maritime Supremacy Rivalry with Syracuse