Can have any command and disobeying him is considered as disobeying God.
Abbasid Caliphate.
Rashidun Caliphate was created in 632.
The Caliphate is the first government of Islam, which in theory would be considered a constitutional republic. It was headed by the Caliph, the head of state, and other officials who are representatives of the people, and they were required to govern based on a written constitution limiting the powers of government over citizens. The first Islamic Caliphate was headed by the Prophet's disciples as a continuation of the government established by him.
Abbasid caliphate -- Baghdad Ummayyad Caliphate- Cordoba
Caliphate of Córdoba ended in 1031.
Caliphate of Córdoba was created in 756.
Abbasid Caliphate was created in 750.
Sharifian Caliphate was created in 1924.
Sokoto Caliphate ended in 1903.
The Almohad Caliphate lasted from 1121 to 1269.
The Caliphate of Cairo
The Rashidun Caliphate under Omar.