I answered this exact same question back in post 1997. ...
Actually your answers were just plain lies as I showed in Post#2068 and numerous times by chester, most clearly in Post #2040 where he gives the text of the correspondence between Darwin and Marx. That Marx thought that Darwin's work was immensely helpful to his theory is beyond doubt from the following:
When Marx read the Origin, he entusiastically declared ti to be "a basis in natural science for the class struggle in istory". ... If Darwin had not the least idea of what Marx was up to or what they might have in common, Marx knew precisely what he vauled in Darwin, Recommending the Origin to Lassalle, he explained that "despite all deficiencies not only is the death-blow dealt here for the first time to teleology in the natural sciences, but their rational meaning is empirically examined." The other reason for his interest in the Origin emerged in Das Kapital, where he complained of the abstract materialism of most natural science, "a materialism that excludes history and its process." It was his hope that by focusing attention on change and development, the Origin would destroy both the old-fashioned supernaturalism and the equally old-fashioned materialism.
From: Gertrude Himmelfarb, "Darwin and the Darwinian Revolution", Page 421.
Post 2065:
Unless you can demonstrate that Marx's philosophy at the beginning of his publishing career is significantly different than that at the end of his publishing career you have proved nothing.