Answer:
Advancement of science and mathematics
Explanation:
Security and prosperity reigned during the early years of the Abbasid rule. Many fields of physics, arithmetic, and medicine have made significant progress. All through the kingdom, universities and institutions of higher learning were established. Arabic architecture and art rose to greater heights, allowing the civilization to prosper.
<span>the answer would be c. confederacy is defined as a loose union of independent states. </span>
<span>Abd Ar-Rahman was a Muslim conqueror and leader that created a Muslim empire in the Iberian penensula, today known as Spain and Portugal. This dynasty lasted for a long time before Christianity and the Spaniards took over.</span>
This one is pretty easy, emperor Constsntine, I think that's how you spell his name.
