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
Operation Enduring Freedom – Horn of Africa servicemen were killed in the Republic of Seychelles and in the Gulf of Oman, respectively. Operation Enduring Freedom – Horn of Africa Operation Enduring Freedom – Horn of Africa (OEF-HOA) is the United States military operation to combat militant Islamism and piracy in the Horn of Africa. It is one component of Operation Enduring Freedom (OEF), which includes eight African states stretching from the far northeast of the continent to the oil-rich Gulf of Guinea in the west. The other OEF mission in Africa is known as Operation Enduring Freedom – Trans Sahara (OEF-TS), which, until the creation of the