Malta has been inhabited from around 5900 BC, since the arrival of settlers from the island of Sicily. A significant prehistoric Neolithic culture marked by Megalithic structures, which date back to c. 3600 BC, existed on the islands, as evidenced by the temples of Bugibba, Mnajdra, Ggantija and others. The Phoenicians colonised Malta between 800 and 700 BC, bringing their Semitic language and culture. They used the islands as an outpost from which they expanded sea explorations and trade in the Mediterranean until their successors, the Carthaginians, were ousted by the Romans in 216 BC with the help of the Maltese inhabitants, under whom Malta became a municipium.