Upton Sinclair's exposés are investigative works that revealed harsh social conditions and unethical practices in industries, most famously illustrated in his novel 'The Jungle.' These writings serve as a critical lens on the impact of industrialization and capitalism on American society, emphasizing the struggles of the working class and the need for reform. Sinclair's work is integral to understanding the naturalistic themes in American literature, which often focus on the influence of environment and heredity on human behavior.
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