Ancient Carthage (ˈkɑrθɪdʒ , Phoenician/Punic: ) was a Semitic civilization centered in North Africa. Initially a settlement in present-day Tunisia, it later became a city-state and then an empire. Founded by the Phoenicians in the ninth century BC, Carthage reached its height in the fourth century BC as one of the largest metropolises in the world and the centre of the Carthaginian Empire, a major power in the ancient world that dominated the western and central Mediterranean Sea. Following the Punic Wars, Carthage was destroyed by the Romans in 146 BC, who later rebuilt the city lavishly. Carthage was settled around 814 BC by colonists from Tyre, a leading Phoenician city-state located in present-day Lebanon. In the seventh century BC, following Phoenicia's conquest by the Neo-Assyrian Empire, Carthage became independent, gradually expanding its economic and political hegemony across the western Mediterranean. By 300 BC, through its vast patchwork of colonies, vassals, and satellite states, held together by its naval dominance of the western and central Mediterranean Sea, Carthage controlled the largest territory in the region, including the coast of north-west Africa, southern and eastern Iberia and the islands of Sicily, Sardinia, Corsica, Malta, and the Balearic archipelago. Tripoli remained autonomous under the authority of local Libyo-Phoenicians who paid nominal tribute. Among the ancient world's largest and richest cities, Carthage's strategic location provided access to abundant fertile land and major maritime trade routes. Its extensive mercantile network reached as far as west Asia, west Africa and northern Europe, providing an array of commodities from all over the ancient world, in addition to lucrative exports of agricultural products and manufactured goods. This commercial empire was secured by one of the largest and most powerful navies in the ancient Mediterranean, and an army composed heavily of foreign mercenaries and auxiliaries, particularly Iberians, Balearics, Gauls, Britons, Sicilians, Italians, Greeks, Numidians, and Libyans.