Ghana Empire Rises

The Ghana Empire, which emerged in the Sahel region of West Africa around 600 AD, was one of the earliest large states in the region known to outsiders, and it grew rich by controlling trade between the Sahara and the gold-producing lands to the south. Its rulers taxed the commerce that passed through their territory, turning a position between two economic zones into lasting political power. The date is approximate, since the empire's origins are poorly documented and its rise was probably gradual rather than a single event.

The empire was centered on the Soninke people, in lands that lie in what is now southeastern Mauritania and western Mali, not in the modern country of Ghana, which took the name in 1957 in tribute to the older state. "Ghana" was originally the title of the ruler, and the kingdom's own name for itself is uncertain. Several factors favored its growth. Iron tools and weapons strengthened farming and warfare, while the spread of camel caravans across the Sahara in the first millennium made long-distance trade more practical. Settlements in the region grew larger and more organized, and local chiefs gradually consolidated authority under a single dynasty.

The empire's wealth rested on gold and salt. Gold came from fields in regions to the south, such as Bambuk and Bure, and Ghana's merchants and officials did not mine it themselves so much as tax and regulate its flow. Salt, mined in the Sahara, was prized in the humid south, where it was scarce. North African Berber and Arab traders brought salt, copper, cloth, and other goods, and returned with gold, as well as ivory and enslaved people. Our best written accounts come from Arabic-speaking geographers, notably al-Bakri in the eleventh century, who described a capital with separate quarters for the king and for Muslim merchants. He wrote that the ruler taxed goods entering and leaving the kingdom, and that the court was impressive. Because these authors rarely visited Ghana themselves, historians treat some details with caution.

Archaeology has identified Koumbi Saleh, in southern Mauritania, as a likely site of the capital, though scholars still debate that identification. Excavations show a substantial trading town with stone buildings and evidence of Islamic presence.

Ghana's power declined from the eleventh century onward, a result of factors that historians continue to debate. These include pressure from the Almoravids, drought and shifting trade routes, and the rise of rival states. By the thirteenth century its former territory had been absorbed by the Mali Empire. Its legacy was nonetheless considerable. It showed how a West African state could build power through trade, and it set a pattern of Sahelian empires, including Mali and Songhai, that later became famous across the Islamic and European worlds.