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The book depicts poverty, the absence of social programs, unpleasant living and working conditions, and the hopelessness prevalent among the working class, which is contrasted with the deeply rooted corruption of people in power. A review by the writer Jack London called it, "the Uncle Tom's Cabin of wage slavery."
Sinclair was considered a muckraker, or journalist who exposed corruption in government and business. He first published the novel in serial form in 1905 in the socialist newspaper, Appeal to Reason, between February 25, 1905, and November 4, 1905.
Click to read more: en.wikipedia.org/wiki/The_Jungle