Upton Sinclair's The Jungle is a vivid portrait of life and death in a turn-of-the- century American meat-packing factory. A grim indictment that led to government. Struggling with Upton Sinclairâ€™s The Jungle? Check out our thorough summary and analysis of this literary masterpiece. From a general summary to chapter summaries to explanations of famous quotes, the SparkNotes The Jungle Study Guide has everything you need to ace.