Upton Sinclair wrote The Jungle to expose the appalling working conditions in the meat-packing industry. His description of diseased, rotten, and contaminated meat shocked the public and led to new federal food safety laws.
Before the turn of the 20th century, a major reform movement had emerged in the United States. Known as progressives, the reformers were reacting to problems caused by the rapid growth of factories and cities. Progressives at first concentrated on improving the lives of those living in slums and in getting rid of corruption in government.
By the beginning of the new century, progressives had started to attack huge corporations like Standard Oil, U.S. Steel, and the Armour meat-packing company for their unjust practices. The progressives revealed how these companies eliminated competition, set high prices, and treated workers as "wage slaves."
