The Aksumite Empire or Axumite Empire (sometimes called the Kingdom of Aksum or Axum), (Ge'ez: አክሱም), was an important trading nation in northeastern Africa, growing from the proto-Aksumite period ca. 4th century BC to achieve prominence by the 1st century AD. Its ancient capital is found in northern Ethiopia, the Kingdom used the name "Ethiopia" as early as the 4th century. It is also the alleged resting place of the Ark of the Covenant and the home of the Queen of Sheba. Aksum was also the first major empire to convert to Christianity.
Aksum is mentioned in the 1st century AD Periplus of the Erythraean Sea as an important market place for ivory, which was exported throughout the ancient world, and states that the ruler of Aksum in the 1st century AD was Zoscales, who, besides ruling in Aksum also controlled two harbours on the Red Sea: Adulis (near Massawa) and Avalites (Assab). He is also said to have been familiar with Greek literature.
The Kingdom of Aksum benefited from a major transformation of the maritime trading system that linked the Roman Empire and India. This change took place around the start of the Common Era. The older trading system involved coastal sailing and many intermediary ports. The Red Sea was of secondary importance to the Persian Gulf and overland connections to the Levant. Starting around 100 BC a route from Egypt to India was established, making use of the Red Sea and using monsoon winds to cross the Arabian Sea directly to southern India. By about 100 AD the volume of traffic being shipped on this route had eclipsed older routes. Roman demand for goods from southern India increased dramatically, resulting in greater number of large ships sailing down the Red Sea from Roman Egypt to the Arabian Sea and India.
The Kingdom of Aksum was ideally located to take advantage of the new trading situation. Adulis soon became the main port for the export of African goods, such as ivory, incense, gold, and exotic animals. In order to supply such goods the kings of Aksum worked to develop and expand an inland trading network. A rival, and much older trading network that tapped the same interior region of Africa was that of the Kingdom of Kush, which had long supplied Egypt with African goods via the Nile corridor. By the 1st century AD, however, Aksum had gained control over territory previously Kushite. The Periplus of the Erythraean Sea explicitly describes how ivory collected in Kushite territory was being exported through the port of Adulis instead of being taken to Meroë, the capital of Kush. During the 2nd and 3rd centuries the Kingdom of Aksum continued to expand their control of the southern Red Sea basin. A caravan route to Egypt was established which bypassed the Nile corridor entirely. Aksum succeeded in becoming the principal supplier of African goods to the Roman Empire, not least as a result of the transformed Indian Ocean trading system. In the 3rd century, Aksum began interfering in South Arabian affairs, controlling at times the western Tihama region among other areas. By the late 3rd century it had begun minting its own currency and was named by Mani as one of the four great powers of his time along with Persia, Rome, and China. It converted to Christianity in 325 or 328 under King Ezana and was the first state ever to use the image of the cross on its coins. At its height, Aksum controlled northern Ethiopia, Eritrea, northern Sudan, southern Egypt, Djibouti, Yemen, and southern Saudi Arabia, totalling 1.25 million km².
It was a quasi-ally of Byzantium against the Persian Empire of the day and declined after the 7th century due to unknown reasons, but informed speculation suggests the rise of Islam heavily impacted its ability to trade with the Far East in the era when shipping was limited to coastal navigation as well as cut it off from its principal markets in Alexandria, Byzantium and Southern Europe.
After a second golden age in the early 6th century, the empire began to decline, eventually ceasing its production of coins in the early 7th century. It finally dissolved with the invasion of the pagan or Jewish queen Gudit in the 9th or 10th century, resulting in a Dark Age about which little is known until the rise of the Zagwe dynasty.
The Aksumite population consisted of Semitic-speaking people (collectively known as Habeshas), Cushitic-speaking people, and Nilo-Saharan-speaking people (the Kunama and Nara).
The Aksumite kings had the official title ነገሠ ፡ ነገሠተ ngś ngśt - King of Kings (later vocalization Ge'ez ንጉሠ ፡ ነገሥት nigūśa nagaśt, Modern Ethiosemitic nigūse negest).
Aksumites did own slaves, and a modified feudal system was in place to farm the land.
Aksum traded with India and Rome (later Byzantium), exporting ivory, tortoise shell, gold and emeralds, and importing silk and spices. Axum's access to both the Red Sea and the Upper Nile enabled its strong navy to profit in trade between various African (Nubia), Arabian (Yemen), and Indian states. In the 3rd century AD, Axum acquired tributary states on the Arabian Peninsula across the Red Sea, and by 350, they conquered the Kingdom of Kush.
The main exports of Axum were, as would be expected of a state during this time, agricultural products. The land was much more fertile during the time of the Aksumites than now, and their principle crops were grains such as wheat and barley. The people of Aksum also raised cattle, sheep, and camels. Wild animals were also hunted for things such as ivory and rhinoceros horns. They traded with Roman traders as well as with Egyptian and Persian merchants.
The empire was also rich with gold and iron deposits. These metals were valuable to trade, but another mineral was also widely traded. Salt was found richly in Aksum and was traded quite frequently.
Aksum remained a strong empire and trading power until the rise of Islam in the seventh century. However, because the Axumites had sheltered Muhammad's first followers, the Muslims never attempted to overthrow Axum as they spread across the face of Africa. Nevertheless, as early as 640, Umar ibn al-Khattāb sent a naval expedition against Adulis under Alkama bin Mujazziz, but it was eventually defeated. Axumite naval power also declined throughout the period, though in 702 Aksumite pirates were able to invade the Hejaz and occupy Jeddah. In retaliation, however, Sulayman ibn Abd al-Malik was able to take the Dahlak Archipelago from Axum, which became Muslim from that point on, though later recovered in the 9th century and vassal to the Emperor of Ethiopia.
Eventually, the Islamic Empire took control of the Red Sea and most of the Nile, forcing Axum into economic isolation. However, it still had relatively good relations with all of its Muslim neighbors. Two Christian states northwest of Axum (in modern day Sudan), Maqurra and Alwa, survived until the thirteenth century when they were finally forced by Muslim conversion to become Islamic. Axum, however, remained untouched by the Islamic movements across Africa.
Before its conversion to Christianity the Aksumites practiced a polytheistic religion not unlike the Greek’s system. Astar was the main god of the pre-Christian Aksumites, and his son, Mahrem (Maher), was who the kings of Aksum traced their lineage. In about 324 AD the King Ezana II was converted by his slave-teacher Frumentius, the founder of the Ethiopian Orthodox Church. Frumentius taught the emperor while he was young, and at some point staged the conversion of the empire. We know that the Axumites converted to Christianity because in their coins they replaced the disc and crescent with the cross. Frumentius was in contact with the Church in Alexandria and was appointed Bishop of Ethiopia around 330 AD Alexandria never reigned Aksum in tightly, rather allowing its own form of Christianity form, however, the church did retain a minor influence. Aksum is also the alleged home of the holy relic the Ark of the Covenant. The Ark is said to have been placed in the Church of Mary of Zion by Menelik I for safekeeping.
Under Emperor Ezana, Axum adopted Christianity in place of its former polytheistic and Judaic religions around 325. This gave rise to the present day Ethiopian Orthodox Tewahedo Church (only granted autonomy from the Coptic Church in 1959), and Eritrean Orthodox Tewahdo Church (granted autonomy from the Ethiopian Orthodox church in 1993). Since the schism with orthodoxy following the Council of Chalcedon (451), it has been an important Miaphysite church, and its scriptures and liturgy are still in Ge'ez.
It was a cosmopolitan and culturally important state. It was a meeting place for a variety of cultures: Ethiopian, Egyptian, Sudanic, Arabic, and Indian. The major Aksumite cities had Sabean, Jewish, Nubian, Christian, and even Buddhist minorities.
Other reasons for the decline are less romantic and more scientific. Climate change and trade isolation are probably also large reasons for the decline of the culture. Overfarming of the land led to decreased crop yield, which in turn led to decreased food supply. This, in turn with the changing flood pattern of the Nile and several seasons of drought, would make it less important in the emerging European economy.