Oman

Parliament
There is no legislature as such.
The sultan appoints the Cabinet of 25 members, who carry out the operations of the government. He also appoints the Consultative Assembly to advise the government.

Sultans
1856-1866   Thuwaini
1866-1868   Salim II
1868-1870   Azan ibn Qais
1870-1888   Turki
1888-1913   Faisal ibn Turki
1913-1932   Taimur ibn Faisal
1932-1970   Said III ibn Taimur
1970 now   Qalus ibn Said