The Ibadis in the Region of the Indian Ocean.

The book explores the historical connections between Oman and the coastal regions of East Africa, detailing the migration of Omani royal families and the establishment of princedoms during the early Middle Ages. It highlights the Omani resistance against Portuguese dominance and the subsequent prosperity under Omani rule following a 1822 treaty with the British. For the first time, the author presents a thorough survey of archaeological evidence from the Islamic period in Kenya and Tanzania, integrating diverse written sources in various languages to provide a comprehensive synthesis.