In the First Punic War, however, it was sacked by the Romans (261) and the Carthaginians (255), and finally in the Second Punic War by the Romans (210).
The mines were known to the Carthaginians, as discoveries of lamps, coins, &c. (now in the museum at Cagliari), testify.
There are signs of trade with Etruria as early as the 7th century B.C. The Carthaginians made it into an important grainproducing centre; and the Romans set foot in the island more than once during the First Punic War.
A rebellion in 215 B.C., fostered by the Carthaginians, was quelled n.
It is dominated, on the seaward side, by four hills, and approached by a narrow entrance, with forts on either hand; a breakwater affords shelter on the east, and on the west is the Arsenal Basin, often regarded as the original harbour of the Carthaginians and Romans.