Comment by deathgrips

What a tragedy. Most westerners don't realize that when Europeans were living in mud huts and emptying their chamber pots into the streets, the Muslim world had plumbing, water filtration, surgery, advanced mathematics, and many more amazing scientific advances which quickly spread throughout Muslim countries due to the cultural exchange at Mecca. I wonder what the world could have been like if the Mongols had never destroyed so much civilization and progress.