Answer:
Option A.
Explanation:
Harun al-Rashid
, is the right answer.
In the year 786, Hārūn became the fifth Abbasid caliph in his early twenties. He began his rule by electing very capable diplomats, who worked hard to improve the condition of the people of his empire. It was under his rule that Baghdad prospered into the most marvelous town of its age. He used the tribute paid by various rulers for the construction of the architecture and to provide patronage to arts.
