The Jungle

The Jungle is a novel by American author and muckraking-journalist Upton Sinclair, known for his efforts to expose corruption in government and business in the early 20th century. In 1904, Sinclair spent seven weeks gathering information while working incognito in the meatpacking plants of the Union Stock Yards in Chicago for the socialist newspaper Appeal to Reason, which published his novel in serial form in 1905. In 1906, the novel was published in book format by Doubleday.

The book realistically depicts working-class poverty, immigrant struggle, lack of social support or welfare, harsh living and dangerous working conditions, generating hopelessness or cynicism and cruelty among the powerless. These elements are contrasted with the deeply rooted corruption of people in power. A review by Sinclair's contemporary, writer Jack London, compared The Jungle to America's most famous novel written to expose a cruel system, by calling it "the Uncle Tom's Cabin of wage slavery."

While Sinclair in describing the meat industry and its working conditions wanted to advance socialism, the novel's most immediate impact was to provoke public outcry over passages exposing health issues and unsanitary practices in the American meat-packing industry during the early 20th century. This led to sanitation reforms including the Meat Inspection Act and other product safety legislation.