In the book The Jungle by Upton Sinclair, the title is truly a description of the world within the book. The slaughterhouse is a terrible place to work and the actual descriptions in the book are real. The way the animals are treated and the way the potential food is treated would be enough to make anyone ill. The publication of the book lead to public outrage about the meat sold to people as food with the contamination the book described. The jungle also referred to the conditions under which the workers labored. Greedy owners really took no care or prevention of injuries to their employees as the employees were viewed as expendable because there was always another person looking for a job. You could also extend the idea of the jungle to the world outside the meat industry which is what Sinclair intended. He was hoping the book would highlight the shameful conditions under which most people worked. The union movement was starting to help organize and give workers some rights, and this book was to help show the public what was happening to people without a union to help them.