The short version is that this belief states that the same basic laws that govern over the animal kingdom likewise govern society. The theory suggests some interesting things depending on how you look at it. On one hand any country/culture/peoples that are driven to extinction by another were no longer worthy of survival. It also suggests that as a whole we are better off because of these actions.
To accept this theory has some interesting implications. It would mean that the near extermination of the Native American has in the long run been productive for mankind as a whole. While I don't per se agree with this logic few people would argue that when all is said and done that America has improved the world in nearly every single field.
It is something to think about.
