The Social Darwinism defended the thesis that there are superior and inferior races, which was widely used by European governments to justify their domains in Asia and Africa during imperialism (XIX century and of the twentieth century). This idea of Social Darwinism created conditions for an increase of prejudice against people from specific continents. These people were seen as inferior. This theory about the superiority of some social groups was also used in the United States. The social Darwinist William Graham Summer stated that "the millionaires are a product of natural selection" (Foster, 2005, p. 262). In other words, it is clear that Darwin's theory turned out to be converted into a thought that reinforced the ideal of the bourgeois
