I've mentioned before that I love geography. Not only are maps fun (for me at least), but they're also ideal for teaching and understanding history. And the map below is no different. It illustrates 5,000 years of the history of religion in 90 seconds.
Since Joely has been reading about Islam in The Story of the World, we watched this earlier today — in fact, we watched it several times.
If you're reading this post on a smartphone, you may have to click through to the site to view the video.
You can see other fascinating history maps at Maps of War.