The Jungle by Upton Sinclair

This novel exposes the harsh conditions and exploited lives of immigrants in the United States in Chicago and similar industrialized cities. The protagonist, a young Lithuanian immigrant, works in the meatpacking industry and experiences the extreme poverty, poor working conditions, and lack of social services. The narrative explores the corruption of the American meatpacking industry in the early 20th century and the hardships faced by the working class, leading to significant public outcry that contributed to the passage of the Pure Food and Drug Act.

The 223rd greatest book of all time