Qaboos acceded to the throne on 23 July 1970 following a successful coup against his father, with the aim of ending the country's isolation and using its oil revenue for modernization and development. He declared that the country would no longer be known as Muscat and Oman, but would change its name to "the Sultanate of Oman" in order to better reflect its political unity.
On 22 March 1976, Qaboos bin Said married his first cousin, Kamila née Sayyida Nawwal bint Tariq Al Said (born 1951), daughter of Sayyid Tariq bin Taimur Al Said and his second wife, Sayyida Shawana bint Nasir Al Said. The marriage ended in divorce in 1979. She remarried in 2005. The marriage produced no heirs, and Qaboos bin Said wrote secret documents naming the successor to his realm.