I came across this fascinating story about Muslims in Spain. I had already read the amazing story of Abd ur Rehman that how he made it to Spain. At the time when Muslims ruled Spain, Europe was not developed. We can compare Spain with today's developed world and All of other Europe as Third World countries. How Europeans learned from Muslims when Islamic Spain declined is an interesting story. Enjoy.
Watch this.
http://vodpod.com/watch/1428923-sweden-in-grip-of-islam