Why were Cordova and Baghdad the twin cultural centers of the world during the ninth century? What scientific developments and discoveries is Ibn Firnas credited with?

When did Ibn Firnas conduct a successful flight?

2.Ibn Firnas is credited with making glass from stones. He had constructed his home as a sort df planetarium where one could see stars, clouds and even lightning.                                                                                                                3.875 CE

Explanation:

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho

imma have to go   the third option

sorry if i am wrong hope this

if i am right plz give me brainliest