He returned to Oman in 1966 and was the subject of appreciable restrictions from his father. In 1970, Qaboos ascended to the Omani throne after overthrowing his father in a very coup d'état, with British assistance. The region was subsequently renamed the Sultanate of Oman. Sultanate of Zanzibar: two incumbents https://janeto531nwg1.blogozz.com/profile