states of Mossylon, Opone, Malao, Mundus and Tabae in Somalia developed a lucrative trade network connecting with merchants from Phoenicia, Ptolemaic Egypt, Greece, Parthian Persia, Saba, Nabataea and the Roman Empire. They used the ancient Somali maritime vessel known as the beden to transport their cargo.
After the Roman conquest of the Nabataean Empire and the Roman naval presence at Aden to curb piracy, Arab and Somali merchants by agreement barred Indian ships from trading in the free port cities of the Arabian peninsula to protect the interests of Somali and Arab merchants in the extremely lucrative ancient Red Sea–Mediterranean Sea commerce. However, Indian merchants continued to trade in the port cities of the Somali peninsula, which was free from Roman interference.
The Indian merchants for centuries brought large quantities of cinnamon from Sri Lanka and Indonesia to Somalia and Arabia. This is said to have been the best kept secret of the Arab and Somali merchants in their trade with the Roman and Greek world. The Romans and Greeks believed the source of cinnamon to have been the Somali peninsula, but in reality, the highly valued product was brought to Somalia by way of Indian ships. Through collusive agreement by Somali and Arab traders, Indian/Chinese cinnamon was also exported for far higher prices to North Africa, the Near East and Europe, which made the cinnamon trade a very profitable revenue generator, especially for the Somali merchants through whose hands large quantities were shipped across ancient sea and land routes.
Birth of Islam and the Middle Ages
Islam was introduced to the area early on from the Arabian peninsula, shortly after the hijra. In the late 800s, Al-Yaqubi wrote that Muslims were living along the northern Somali seaboard. He also mentioned that the Adal kingdom had its capital in the city, suggesting that the Adal Sultanate with Zeila as its headquarters dates back to at least
