Later, during the Crusades allowed Europeans access to scientific and textbooks of the Arabs, including the works of Jābir ibn Hayyān, Ptolemy, Aristotle, Alhazen, Avicenna, al-Khwarizmi, and Averroes.
During the crusades the Europeans access to scientific Greek and Arabic texts, including the works of Aristotle, Ptolemy, Jābir ibn Hayyān, al-Khwarizmi, Alhazen, Avicenna, and Averroes.
Later, during the Crusade has allowed access to Greek and European science textbook of the Arabs, including works of Aristotle Ptolemy,,, J ā bir Ibn Hayy ā n al-Khwarizmi Alhazen Avicenna,,,, and Averroes.