The Golden age of Islam centered around the advancment of science and medicine, agriculture, literature, language, philosophy, astronomy and so on.
Mongols & Turks, Conquered most of Eurasia, 1206- Genghis Khan established the powerful Mongol empire, Lots of blood shed, Turkic leaders destroyed cities, slaughtered thousands and did severe damage to the ancient irrigation systems of Mesopotamia., People are becoming Nomadic, Eventually, Mongols and Turks that settled in parts of Persia, Central Asia, Russia and Anatolia converted to Islam.
Crusades, Muslims spread to new areas, causing conflict with Christians, Pope Urban II of Rome calls for all Christians to drive out Muslims from Jerusalem and its surrounding regions.
Religious freedom, Christianinty, Judaism, Muslim
Freedom of speech
preserved works of Aristotle, Avicenna logic
extended to previous isolated regions and Africa, Indian and China Sea