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Part 34: One River, Two Worlds
The core land of Axum itself almost ensured that any state rising from it would be at least reasonably rich. Fertile, producing a great amount of grains such as wheat and barley, allowing it to sustain a large population, and close to the port of Adulis, a valuable trading post in the Arabian Gulf, it was only a matter of time before the kingdom became a respectable middle power, mentioned by texts such as the Periplus of the Erythraean Sea and by the prophet Mani. It was the perfect foundation to build a great empire, one which Ezana the Great used to great effect. After snatching Himyar from the decaying Palmyrene Empire in 330 A.D., giving him complete control over all trade in and out of the Arabian Gulf, the first Christian king in history marched northward and subjugated the states of Meroe and Napata, extending his domains to the fertile banks of the Nile and creating a third source of income for his kingdom, the other ones being agriculture from the Ethiopian highlands and maritime trade.
By the time of Ezana's death from old age sometime in the 360s, Aksum had become, proportionally speaking, the richest state in the world. Products from all corners of the world, such as wine from the Roman Empire, gold and ivory from the Swahili coast, spices from India, pearls and rugs from Iran, fine silks from China, all of them flowed through its ports and swelled its coffers immensely. With no foreign threats to speak of, Ezana's successor, Mehadeyis, used his unimaginable fortune to further the growth of Christianity inside and outside the kingdom, first financing the construction of the Old St. George's Basilica in the city of Aksum (which wouldn't be completed until over a century after his death), which would become the nerve center of all Orthodox Christianity (other groups would obviously either have their own centers or none at all), and the activities of countless missionaries throughout the Erythraean Sea.
By the time of Mehadeyis' natural death sometime in the late 4th century (now believed to be around 390), there were several churches of varying sizes scattered all over locations that were important Aksumite trade routes, especially the Swahili city-states, the southern coast of Arabia and, to a lesser degree, the coast of Malabar, India's main spice growing region and a critical point of the Maritime Silk Road. This growth wasn't entirely positive, unfortunately: when Honorius of Olissipo, a follower of Sol Invictus, passed through the kingdom's extensive territory on the long return journey back to his homeland of Roman Lusitania in 391 A.D., he remarked how he was forced to pay additional taxes and was almost denied some services since he didn't follow the state religion or belong to a 'protected class' (1).
The Ezana Stone, which documents said king's conversion to Christianity and his many conquests.
Far to the north, down the Nile, a very different story unfolded. As one of the oldest civilizations in the world, Egypt once lived days of great riches and glory, when its pharaohs controlled a state that, at the apex of its power, stretched from Syria and Palestine to the sixth cataract of the great river. But these days were long gone, and had been for thousands of years, in fact. Although the land itself was still fertile and wealthy, its current foreign-born rulers, desperate to prove to the world that they were the last remnant of the Palmyrene Empire, were almost completely disconnected from the rest of the population as a result (especially when religion was involved), and did a horrible job administrating it.
Coups, assassinations and uprisings were common, and by the early fifth century Egypt was "governed" by a king whose voice wasn't heard beyond the walls of Alexandria, still the largest and richest city in the Mediterranean despite everything happening in the rest of the country. It was only a matter of time before this weak monarch, ironically named Odainat (and thus called 'Odainat the Lesser' by historians), suffered the fate of his predecessors, and the Christian patriarch of Alexandria, a man by the name of Alexander, was already conspiring with local notables, particularly traders, who resented the wasteful privileges and incompetence of the men in charge.
Back in Aksum, the king in charge, an ambitious youth by the name of Ouazebas, who was either Mehadeyis' grandson or great-grandson (most sources point to the latter, but lack of evidence and propaganda must be taken into account), watched the situation in the north with great interest. He had no doubt that most of Egypt's population was composed of good Christians who chafed under their stubbornly pagan rulers, Christians who would welcome him with open arms just like the Himyarites did with Ezana. It had been decades since the last time the kingdom got involved in a major war, and Ouazebas was eager to gain glory for himself and become even richer in the process.
As such, he assembled an army that may have numbered as many as 70.000 men and, in 418 A.D., finally invaded Egypt, marching along the Nile. The entire country crumbled like a house of cards, and within months the Aksumite army, fed by the abundant grain grown on the great river's banks, was at the gates of Alexandria. Ouazebas, sure that he was on the verge of victory, supposedly began to make preparations to move his seat of power to Dongola, from which he could administrate both Egypt and Aksum more effectively.
He had no idea what he had gotten himself into.
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Notes:
(1) Basically a tolerated religion.