A highland state on the Red Sea route
Aksum was a kingdom centred on the town of Aksum in the highlands of what is now northern Ethiopia, with a reach into Eritrea and, at times, across the Red Sea. It is known from the first centuries CE and was at its height roughly between the 3rd and 6th centuries. Its people spoke Ge’ez, a Semitic language that is still used in Ethiopian church services, and its rulers built a state that took part in trade across the Red Sea and the Indian Ocean.
The kingdom grew on a base of farming in the cool, fertile highlands, where rains support cereals, together with control of routes to the coast. The coastal port of Adulis, on the Red Sea, was its main outlet.
Aksum in the sources
The earliest outside reference is in the Periplus of the Erythraean Sea, a Greek merchant’s guide probably written in the first century CE. It describes Adulis and the inland kingdom, naming a ruler, Zoskales, and listing goods traded at the port. These included ivory, tortoiseshell and rhinoceros horn from Africa, and imported cloth, glass, metal goods and wine. The guide places Adulis within a trading system that stretched towards Egypt, Arabia and India, in which seasonal monsoon trade winds played an important part.
In the 3rd century a Persian writer, Mani, is reported to have named Aksum among the great kingdoms of the world, though the details of this claim depend on how later authors quoted him, so it is best treated as a suggestion of reputation rather than a proof of rank. Aksumite rulers also left their own inscriptions, written in Ge’ez, in Greek and sometimes in the South Arabian script. Because the Greek texts were readable by Mediterranean visitors, they show that the royal court wished to address the wider world.
Coinage
One of Aksum’s best-known features is its coinage, which began late in the 3rd century CE. It was among the few ancient states in sub-Saharan Africa to strike its own coins. The coins were made in gold, silver and bronze, and many carry Greek inscriptions and portraits of the king, designed along lines familiar from the Roman and Byzantine world. The coin minting tradition indicates that the state wanted its money to be accepted in international trade, and gold coins in particular may have served in dealings with merchants from the Mediterranean.
Coins are also useful to historians as a dated sequence of rulers. They allow names to be placed in an order that the inscriptions alone do not give, although the reign dates that result are approximate.
King Ezana and Christianity
In the 4th century the kingdom adopted Christianity. The ruler most closely connected with this is Ezana, whose reign is usually placed in the first half of the 4th century. Later Christian tradition, recorded by the church historian Rufinus, says a Syrian Christian named Frumentius, who had been brought to Aksum as a young man, converted the king and was consecrated bishop by Athanasius of Alexandria. The story is plausible and is partly supported by other evidence, but it comes from a later source.
The inscriptions of Ezana show a change over time: earlier ones invoke traditional gods, while later ones refer to a single God and the Lord of Heaven. Coins show a similar shift, with the older disc-and-crescent symbols replaced by the cross. Aksum’s church remained tied to the Patriarchate of Alexandria and developed into the Ethiopian Orthodox Tewahedo Church, which remains a major institution in Ethiopia and Eritrea today. Ezana’s inscription also records campaigns in the region of Kush, a sign that the Nubian kingdom of Meroe, with its Meroe iron industry and Meroitic script, was in decline by that period. The details are debated.
Reach across the sea
In the early 6th century, King Kaleb is recorded in several sources as sending an army across the Red Sea to Himyar in southern Arabia, an area where the older Sabaean kingdom had once flourished. The expedition was linked to conflict involving a Jewish-ruled Himyar and Christian communities. The aftermath was complicated, and Aksumite control did not last, but the episode shows how far the kingdom’s power extended.
Decline
Aksum’s importance faded in the 7th century and afterwards. Several factors are suggested:
- The rise of Islam and the growth of Arab control over Red Sea trade reduced the kingdom’s role as an intermediary.
- The Persian conflicts in southern Arabia disrupted trade routes.
- Environmental stress around the capital, such as soil exhaustion or changes in rainfall, may have played a part, although the evidence is disputed.
The centre of Ethiopian power moved south over time. Aksum remained a religious capital, and Ethiopian kings were crowned there for many centuries. The later Zagwe rulers and the churches of Lalibela belong to a different era.
Monuments and legacy
The most visible remains at Aksum are its tall carved stelae, which marked tombs of the elite, along with the ruins of large buildings and royal tombs. The kingdom left a deep imprint on Ethiopian national memory. The medieval Ethiopian text called the Kebra Nagast links the royal line to Solomon and the Queen of Sheba, a legend that gives the dynasty a sacred ancestry and should be read as tradition rather than record. For Ethiopians, Aksum also remains a living religious site, the place associated with the Church of St Mary of Zion.