Lincoln Steffens’s The Shame of the Cities and
Ida Tarbell’s The History of the Standard Oil
Company are examples of the use of
(1) the Gospel of Wealth
(2) the melting pot theory
(3) Social Darwinism
(4) muckraking
Lincoln Steffens’s The Shame of the Cities and Ida Tarbell’s The History of the Standard Oil Company are examples of the use of "(1) the Gospel of Wealth"