He returned to Oman in 1966 and was the subject of appreciable limitations from his father. In 1970, Qaboos ascended on the Omani throne after overthrowing his father within a coup d'état, with British aid. The country was subsequently renamed the Sultanate of Oman. Sultanate of Zanzibar: two incumbents (from https://donalds653qbk2.ltfblog.com/profile