A 3 part documentary done by the National Geographic Channel called, "Guns, Germs, And Steel." Based on a book by Jared Diamond, who also is in this documentary. Explores the reasons why some parts of our planet developed technology which enabled them to dominate the parts of the planet that remained under-developed. Very interesting if you're into this kind of thing. Narrated by Peter Coyote. Streaming on Netflix if you got it.