What was Upton Sinclair’s main purpose in writing The Jungle ?

Sinclair wrote The Jungle mainly to expose the exploitation of workers and promote socialism as a remedy. He later remarked that he aimed for the public’s heart but hit its stomach: readers focused on the unsanitary meatpacking conditions, helping spur food-safety laws. So prompting those laws was an important result, but the main purpose was to promote his socialist views.

AI-written and checked against the verified answer.