Charles Darwin's theory of natural selection, according to which the most capable individuals survive in the struggle for survival, over the weaker, and thus transfer their genes to future generations, thus making a selection of stronger and more capable genes. When this theory in combination with the social theory of Herbert Spencer, applies to society as a whole, Social Evolution or Social Darwinism is obtained. This theory was very popular both in Europe and America in the nineteenth century to justify imperialism and racism. The ability of the stronger and more capable in the struggle for profit, where they choose different ways, even use racism. towards the weak and the poor, but not only that, to achieve their goals of enrichment. Some extreme followers of Social Darwinian argued that the government should not interfere with the survival of the "most capable" by helping the poor and hungry by various social measures, and promoted the idea that some races are biologically superior to others.