There are underlying, and largely irresistible, forces acting in societies which are like the natural forces that run in animal and plant communities. One can then make social laws similar to natural ones. These social forces are of such a kind as to produce evolutionary progress through the natural conflicts between social groups. The best adapted and most successful social groups survive these conflicts, raising the evolutionary level of society generally.

Both Social Darwinism and the Social Gospel movement had major impact on the United States. Both philosophyes affected the social, economic and political climate of America. The growth of both ideas throughout the country caused frequent of tension with differing beliefs