The Geography of Faith and its Wars Across History
Somewhat dumbed down, like the last one, but I think it reinforces the idea that people believe what the people around them believe, and that this is historically shaped by geography, politics, and commerce.
An entertaining link, but you're a fool if you don't believe in Manifest Destiny.
And I pity the fool.

Link: 5000 Years of Religion in 90 Seconds
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