Which Upton Sinclair Muckraking Masterpiece Is Credited With Spurring The Passage Of The Pure Food And Drug Act?. The book was the result of the author's investigation into the lives and. By exposing the unsanitary and unhygienic practices of the.

By exposing the unsanitary and unhygienic practices of the. Upton sinclair was influential in obtaining passage of the pure food and drug act of 1906. The book was the result of the author's investigation into the lives and.