Carthaginian coins
At her zenith Carthage probably had the hitherto unheard-of population of a million. This population was largely industrial, and her woven goods were universally famous. As well as a coasting trade, she had a considerable land trade with Central Africa,[126] and she sold negro slaves, ivory, metals, precious stones and the like, to all the Mediterranean people; she worked Spanish copper mines, and her ships went out into the Atlantic and coasted along Portugal and France northward as far as the Cassiterides (the Scilly Isles, or Cornwall, in England) to get tin. About 520 B.C. a certain Hanno made a voyage that is still one of the most notable in the world. This Hanno, if we may trust the Periplus of Hanno, the Greek translation of his account which still survives, followed the African coast southward from the Straits of Gibraltar as far as the confines of Liberia. He had sixty big ships, and his main task was to found or reinforce certain Carthaginian stations upon the Morocco coast