Ancient Carthage
Settlement as Tyrian colony (c. 814 BC)

To facilitate their commercial ventures, the Phoenicians established numerous colonies and trading posts along the coasts of the Mediterranean. Organized in fiercely independent city-states, the Phoenicians lacked the numbers or even the desire to expand overseas; most colonies had fewer than 1,000 inhabitants, and only a few, including Carthage, would grow larger. Motives for colonization were usually practical, such as seeking safe harbors for their merchant fleets, maintaining a monopoly on an area's natural resources, satisfying the demand for trade goods, and finding areas where they could trade freely without outside interference. Over time many Phoenicians also sought to escape their tributary obligations to foreign powers that had subjugated the Phoenician homeland. Another motivating factor was competition with the Greeks, who became a nascent maritime power and began establishing colonies across the Mediterranean and the Black Sea. The first Phoenician colonies in the western Mediterranean grew up on the two paths to Iberia's mineral wealth: along the northwest African coast and on Sicily, Sardinia, and the Balearic Islands. As the largest and wealthiest city-state among the Phoenicians, Tyre led the way in settling or controlling coastal areas. Strabo claims that the Tyrians alone founded three hundred colonies on the west African coast; though clearly an exaggeration, many colonies did arise in Tunisia, Morocco, Algeria, Iberia, and in Libya. They were usually established as trading stations at intervals of about 30 to 50 kilometres along the African coast.

By the time they gained a foothold in Africa, the Phoenicians were already present in Cyprus, Crete, Corsica, the Balearic Islands, Sardinia, and Sicily, as well as on the European mainland, in what are today Genoa and Marseilles. Foreshadowing the later Sicilian Wars, settlements in Crete and Sicily continually clashed with the Greeks, and Phoenician control over all of Sicily was brief. Nearly all these areas would come under the leadership and protection of Carthage, which eventually founded cities of its own, especially after the decline of Tyre and Sidon.

The site of Carthage was likely chosen by the Tyrians for several reasons. It was located in the central shore of the Gulf of Tunis, which gave it access to the Mediterranean sea while shielding it from the region's infamously violent storms. It was also close to the strategically vital Strait of Sicily, a key bottleneck for maritime trade between the east and west. The terrain proved as invaluable as the geography. The city was built on a hilly, triangular peninsula backed by the Lake of Tunis, which provided abundant supplies of fish and a place for safe harbor. The peninsula was connected to the mainland by a narrow strip of land, which combined with the rough surrounding terrain, made the city easily defensible; a citadel was built on Byrsa, a low hill overlooking the sea. Finally, Carthage would be conduit of two major trade routes: one between the Tyrian colony of Cadiz in southern Spain, which supplied raw materials for manufacturing in Tyre, and the other between North Africa and the northern Mediterranean, namely Sicily, Italy, and Greece.
detectable_format:number_highlighted_sections[6], detectable_content:postscript, length_constraints:number_sentences[5]