After Christians reconquered Toledo in 1085, they found massive libraries of Arabic books. Archbishop Raymond established a translation school where Jews, Christians, and Muslims worked together to translate Arabic works into Latin.

Ibn Rushd's commentaries on Aristotle were translated into Latin and became the standard text in European universities. His philosophy was so influential that a movement called "Averroism" spread across Paris and Italy.

Translated by Gerard of Cremona, Ibn Sina's Al-Qanun (Canon of Medicine) became the supreme medical authority in Europe. It was the primary textbook in the universities of Montpellier and Leuven until 1650.

Leonardo Fibonacci grew up in North Africa (Algeria), where he learned the Muslim number system (0-9). He returned to Italy and wrote Liber Abaci, introducing "Arabic Numerals" to Europe and ending the use of clumsy Roman numerals.

Under Norman rule, Sicily remained a hub of Islamic culture. King Roger II wore Arab robes and commissioned Al-Idrisi to make his world map. Emperor Frederick II spoke Arabic and founded the University of Naples based on Islamic models.

Renaissance art is famous for "Linear Perspective" (3D depth). This technique was directly influenced by the Latin translation of Ibn al-Haytham's Book of Optics (Perspectiva), studied by artists like Ghiberti and Da Vinci.

Europe used expensive parchment (animal skin) until Muslims introduced Paper Mills in Spain (Xativa) and Italy. This lowered the cost of books drastically, paving the way for the Printing Press and mass literacy.

Nicolaus Copernicus is famous for the Heliocentric theory. However, his mathematical models for planetary motion are identical to those of Nasir al-Din al-Tusi and Ibn al-Shatir, proving he used Islamic sources to correct Greek errors.