It promoted Islam but tolerated the culture, religion, and science of non-Muslims.
No it should still be around but could be made it smaller as people need this opportunities for further life
Es la capital de Italia mas no entiendo a la perfeccion tu pregunta
The answer would probably be use of iron and steel for weaponry also creating papyrus for written language
I believe rice became a Chinese Staple food during the Tang dynasty because new types of rice and new growing techniques yielded bigger harvests. Hope that helped.