[citation needed] Under Mago, Carthage established itself as the dominant Phoenician military power in the western Mediterranean.
Between 540 and 535 BC, a Carthaginian-Etruscan alliance had expelled the Greeks from Corsica after the Battle of Alalia.
The Etruscans took control of Corsica, and Carthage concentrated on Sardinia, ensuring that no Greek presence would be established in the island.
Carthage lost battles but managed to safeguard Phoenician Spain and close the Strait of Gibraltar to Greek shipping,[6] while Massalians retained their Spanish colonies in Eastern Iberia above Cape Nao.
It is not known if Carthage had any role in the Battle of Cumae in 524 BC, after which Etruscan power began to wane in Italy.