Sultanate (noun)

1. A monarchy or country ruled by a sultan.
2. The office or jurisdiction of a sultan.
3. A sultan's rule or reign.

Origin:

Early 17th century: from ottoman turkish sultanat, from sultan.

Examples:

1. The Ottoman Empire was a sultanate for over 600 years.
2. The sultanate of Brunei is a wealthy country in Southeast Asia.
3. The sultanate of Zanzibar was a major center of the spice trade.
4. The sultanate of Oman has a rich history and culture.
5. The sultanate of Sulu was a Muslim state in the Philippines.