The Communist Manifesto was published in 1848.
The Origin of Species was published in 1859.
Amongst Darwin's lesser known inventions was a time machine. I have inferred this (a metaphysical process, unfortunately) because not only have creationists told me that he inspired Marx, but also his ideas were inspired by Haeckel's embryology errors.
The Origin of Species was published in 1859.
Mein Kampf was published in 1925.
Neither publication is particularly scientific, the former serving as a kind of biblical text for the avid evolutionist. As for Hitler, he was just following the "course of nature."