Video: How Religion Spread Across the World:

https://www.youtube.com/watch?v=AvFl6UBZLv4

The Big Religion Chart:

http://www.religionfacts.com/big-religion-chart

Other Religion Resources:

http://www.religionfacts.com/symbols/big_gallery_of_symbols.htm

http://www.youtube.com/watch?v=HybxZkMxZvQ

http://www.newsmax.com/TheWire/most-popular-religions-sects-images/2014/05/01/id/569022/

http://www.vcpost.com/articles/25394/20140812/what-people-world-believe-top-5-largest-religion.htm

http://www.infoplease.com/toptens/organizedreligions.html