How Americans interpreted the concepts of freedom and equality from the end of the Civil War until 1906

Consider your reading in Ragged Dick, Souls of Black Folk, and The Jungle. Use these works to make a statement about how americans interpreted the concepts of freedom and equality from the end of the civil War until 1906 (publication year of The Jungle.)5 pages.Start with the thesis in a very beginning,need some evidence from the book.but not quotations.