This quick video shows how the five major religions spread. It is a little inaccurate though since it kind of ignore any of the other religions out there. Plus it makes it seem like before those five, there were no other religions. Although, I guess that would not have the dramatic effect.
Anyways, at the end of the video you can see that one of the references was a professor from Penn State, who taught my first religious studies course. Funny story. She has a bit of an accent and every time she said “faith”, I thought she was saying fate. So I had a multiple pages of notes where I had to go back and cross out fate. You might think “well Josh, didn’t you at least get from context that she meant faith?” And I think it was one of those things that either one fit. Or I am just an idiot. You decide.