The event that led to this system was the civil war. People had different views than other people, and there was both rich and poor differences as well. Hope this helps!
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.
Scientists use radiocarbon dating to estimate the age of artifacts
Answer:
Genghis Khan meaning universal ruler
Explanation: