In Guns, Germs, and Steel, Jared Diamond reviews parts of history in order to theorize how different cultures became civilization's haves and how others became its have-nots. Diamond is a biologist, and here he seeks to explain why Eurasians--rather than Native Americans, Africans, and Native Australians--became successful conquerors. Diamond argues that rather than race and culture, factors such as food production and animal domestication allowed Eurasians to economically dominate the world.