According to ancient tradition, Phoenician settlers from Tyre founded Carthage (near modern Tunis). The city’s excellent harbors and mercantile networks became the basis for its later maritime empire in the western Mediterranean.
Phoenician colonists established an early settlement at Sa Caleta on Ibiza, illustrating the western Mediterranean island network that supported long-distance seaborne trade. (The island later became part of the Punic sphere.)
By the 6th century BCE, Carthage was increasingly involved in Sicily, supporting and controlling Phoenician communities (notably around Motya, Panormus, and Soluntum). Sicily became a key arena for Carthage’s sea power, trade protection, and rivalry with Greek city-states.
Rome and Carthage concluded an early treaty defining spheres of activity and trading rules—evidence that Carthage was already a major naval-commercial power whose agreements mattered to emerging Rome.
A large Carthaginian expedition to Sicily was defeated by Greek forces at Himera. The loss checked Carthaginian ambitions on the island for a time and underscored how naval transport and overseas campaigning shaped Sicilian power politics.
Conflict erupted when Rome intervened at Messana, turning Sicilian rivalries into a full-scale war with Carthage. The struggle became a contest for command of sea lanes and coastal strongholds across the central Mediterranean.
An early naval clash of the First Punic War ended with Carthaginian forces capturing a Roman squadron at Lipara Harbor. The engagement highlighted Carthage’s experienced seamanship and the steep learning curve Rome faced at sea.
A major revolt by unpaid troops and disaffected African communities (also called the Truceless War) threatened Carthage’s core territory. The crisis strained Carthage’s finances and demonstrated the vulnerabilities of its empire’s reliance on mercenary forces.
Rome decisively defeated Carthage’s relief fleet off the Aegates Islands, cutting supply to Carthaginian forces in Sicily and compelling peace negotiations. The battle marked a turning point in control of the western Mediterranean’s maritime routes.
After consolidating power in the aftermath of the Mercenary War, Hamilcar Barca led efforts in Iberia to secure resources (notably silver) and build a new base of manpower and revenue—strengthening Carthage’s ability to project power by sea and land.
War resumed after escalating disputes in Iberia, leading to Rome’s declaration of war on Carthage. The conflict linked Iberian resources and western Mediterranean sea routes to the wider struggle for regional dominance.
Hannibal’s march from Iberia into Italy via the Alps bypassed Roman maritime advantages and opened a new phase of the war. The operation showcased how Carthaginian strategy could combine overseas bases with audacious long-distance campaigning.
Rome launched a final war against Carthage after renewed tensions in North Africa. The conflict culminated in a sustained siege that targeted Carthage’s ability to function as a maritime-commercial city-state.
After a prolonged siege, Roman forces took Carthage; the city was destroyed and survivors were enslaved. Carthage’s fall ended its western Mediterranean maritime empire and confirmed Roman hegemony in the region.
Carthaginian Maritime Empire in the Western Mediterranean (c. 800–146 BCE)
