Charles A. Beard,
Contemporary American History, 1877-1913
“ The student of social and political evolution is concerned rather with the effect of such material changes upon the structure of society, that is, with the rearrangements of classes and the development of new groups of interests, which are brought about by altered methods of gaining a livelihood and accumulating fortunes. It is this social transformation that changes the relation of the individual to the state and brings new forces to play in the struggle for political power. The social transformation which followed the Civil War embraced the following elements. ”
