That would be famous CALIPH HARUN AL-RASHID, who founded the Beit al-Hikma or House of Wisdom, one of the largest libraries in Pre-Modern Times.
Abbasid Caliphate.
An Abbasid is a member of the dynasty of caliphs which ruled from Baghdad from around 750 to 1250, claiming ancestry of Abbas.
The Abbasids
The first Caliph Abou Bakr, then Omar. then Othman, then Aly
they ruled by a leader who did not like them
Ruled means you were the leader or ruler. It would be the land you ruled.
whendid zimbabwe gain independence which party has ruled since and whose its leader
Hitler ruled as leader of the Nazi Party of Germany.
Vladimir Lenin is the communist leader who ruled Russia immediately after World War 1.
Rome
Shogun
a large territory in which several groups of people are ruled by a single leader or government