Here's a breakdown of how it happened:
* The Jungle's Impact: Sinclair's novel, published in 1906, exposed the horrific conditions in Chicago's meatpacking industry. The graphic descriptions of unsanitary practices, adulterated products, and the exploitation of workers shocked the public.
* Public Outrage: The novel sparked widespread disgust and calls for reform. The public outcry, fueled by media coverage and public figures, pressured politicians to take action.
* Political Action: President Theodore Roosevelt, initially hesitant, was swayed by the public sentiment and the potential for a major political backlash. He pushed for legislation to address the issues raised by *The Jungle*.
* Meat Inspection Act: This law mandated federal inspection of meatpacking plants and set standards for sanitation.
* Pure Food and Drug Act: This law prohibited the manufacture, sale, or transportation of adulterated or mislabeled food and drugs. It created the Food and Drug Administration (FDA) to enforce these regulations.
While Sinclair intended *The Jungle* to draw attention to the plight of workers, the public response focused on the unsanitary food practices. This led to a significant shift in consumer safety and the beginning of a new era of food regulation in the United States.