The document discusses the Progressive era reforms from 1898-1920. It covers:
1) Progressives fought to make the economic and political systems fairer as the 20th century began and attacked societal ills.
2) Muckrakers, like Ida Tarbell and Lincoln Steffens, exposed political corruption and corporate abuses through journalism, energizing the Progressive movement.
3) Jacob Riis's book "How the Other Half Lives" shocked the public with descriptions of slum conditions and led to New York tenement housing reforms.