who was upton sinclair and what government action did his work inspire?

Upton Sinclair, American novelist and political writer, was one of the most important muckrakers (writers who search out and reveal improper conduct in politics and business) of the 1900s. His novel The Jungle helped improve working conditions in the meat-packing industry

the american revolution was by the middle and upper class, and the french was by the lower and middle class.