Upton Sinclair, Jr. & His Novel: The Jungle Upton Sinclair, the man who grasped America by the stomach. His famous novel The Jungle showed how the Progressive Era was a time where the meat packaging wasn't exactly the cleanest in Chicago. This is where the problem was brought up by Upton. In our essay we plan to discuss how The Jungle has goten its fame, before and after events all leading up to a conclusion of a bill, this law enforce stronger rules to inspect meat and to put all of the ingredients on a package label. If we try to list the re ....