Muslim Spain 2nd

I answered some of your questions in the other thread.  In general, the libraries and translation schools established in Cordoba were the source for the introduction of Classical (Greek and Roman) literature, science, medicine and philosophy to the rest of western Europe as well as Arabic and Persian advances.  Most of these works were in Greek.  They were translated into Arabic and came to Spain with the Islamic rulers who had them translated into Latin for their non-Arabic speaking subjects.  The famous French abbey of Cluny sent monks to Cordoba to study translation under Islamic and Jewish scholars and to bring these works there for dispersal throughout Christian Europe.  Alfonso X (ruled Castilla, Leon and Galicia from 1252 to 1283) established his own translation school and had many works translated into the early vernacular Castillian so that more people could read them.    Keep in mind that this was well prior to Gutenberg's movable type printing press (1447) and each book had to be laboriously copied by hand using a quill.