Horn of Africa Himyarite Kingdom. Under Ezana (fl. 320–360), the kingdom of Aksum became the first major empire to adopt Christianity, and was named by Mani as one of the four great powers of his time, along with Persia, Rome and China. Northern Somalia was an important link in the Horn, connecting the region's commerce with the rest of the ancient world. Somali sailors and merchants were the main suppliers of frankincense, myrrh and spices, all of which were valuable luxuries to the Ancient Egyptians, Phoenicians, Mycenaeans, Babylonians and Romans. The Romans consequently began to refer to the region as "Regio Aromatica". In
Horn of Africa called "qenet", of which there are four main modes: "tezeta", "bati", "ambassel", and "anchihoy". Three additional modes are variations on the above: tezeta minor, bati major, and bati minor. Some songs take the name of their qenet, such as tezeta, a song of reminiscence. In the field of technology, the Great Stele of Axum, at over long, was the largest single stone ever quarried in the ancient world. Most inhabitants in the Horn of Africa follow one of the three major Abrahamic faiths. These religions have had a longstanding adherence in the region. The ancient Axumite Kingdom produced coins and