The Shirazi people, also known as Mbwera, are a Bantu ethnic group inhabiting the Swahili coast and the nearby Indian ocean islands. They are particularly concentrated on the islands of Zanzibar, Pemba and Comoros. A number of Shirazi legends proliferated along the East African coast, most involving a named or unnamed Persian prince marrying a Swahili princess. Modern academics reject the authenticity of the primarily Persian origin claim. They point to the relative rarity of Persian customs and speech, lack of documentary evidence of Shia Islam in the Muslim literature on the Swahili Coast, and instead a historic abundance of Sunni Arab-related evidence. The documentary evidence, like the archaeological, "for early Persian settlement is likewise completely lacking.". The Shirazi are notable for helping spread Islam on the Swahili Coast, their role in the establishment of the southern Swahili sultanates like Mozambique and Angoche, their influence in the development of the Swahili language, and their opulent wealth. The East African coastal area and the nearby islands served as their commercial base. History Mythic: Persians and Arabs There are two main myths about the origins of the Shirazi people. One thesis based on oral tradition states that immigrants from the Shiraz region in southwestern Iran directly settled various mainland ports and islands on the eastern Africa seaboard beginning in the tenth century, in an area between Mogadishu, Somalia in the north and Sofala in the south. According to Irving Kaplan, prior to the 7th century, the coastal areas frequented by the Persian migrants were inhabited by "Bushmanoid" Africans. By the time of the Persian settlement in the area, these earlier occupants had been displaced by incoming Bantu and Nilotic populations. More people from different parts of the Persian Gulf also continued to migrate to the Swahili coast over several centuries thereafter, and these formed the modern Shirazi. However, East African and other historians dispute this claim. According to Gideon S. Were and Derek A. Wilson, there were Bantu settlements along the East African coast by 500 AD, with some of the settlements taking the form of "highly organised kingdoms governed by ruling classes with well-established traditional religions". The second theory on Shirazi origins posits that they came from Persia, but first settled on the Somalia littoral near Mogadishu. In the twelfth century, as the gold trade with the distant entrepot of Sofala on the Mozambique seaboard grew, the settlers are then said