Which was NOT used to justify European imperialism in the late nineteenth century? A) The philosophy of Karl Marx, B) a belief in European superiority, C) a new wave of Nationalism, or D) social Darwinism

The philosophy of Karl Marx was not used to justify European Imperialism whereas European superiority allowed other races to be seen as sub-human, as did social Darwinism as there were theories produced to suggest the white race was genetically superior (where the term Caucasian came from).