The Coptic Church of Egypt continued to supply Ethiopia with bishops until the 1950s. In all, Egypt sent 111 bishops during the nearly two millennium relationship (Erich, H 2000, 24).
From its capital on the Ti gray Plateau, Assam was in command of the trade of ivory with Sudan. It also dominated the trade route leading south and the port of Adults on the Gulf of Zola. Its success depended on resourceful techniques, production of coins, steady migrations of Greco-Roman merchants and ships landing on the port of Adults. In exchange for Sum's goods, traders bid many kinds of cloths, jewelry, metals and steel for weapons.