

"After five rejections", its first edition as a book was published by Doubleday, Page & Company on February 28, 1906, and it became an immediate best seller and has been in print ever since. The Jungle was first published in a series in 1905. He was welcomed there and was with them until two in the morning. One Sunday afternoon, he worked his way into a group of Lithuanian immigrants getting together for a wedding party, "Behold, there was the opening scene of my story, a gift from the gods". He rented living quarters and immediately began walking its streets, talking to its people and taking pictures. When he came to the lobby of the Chicago Transit House, a hotel, he was quoted as saying, "Hello! I'm Upton Sinclair, and I'm here to write the Uncle Tom's Cabin of the Labor Movement!". Upton Sinclair came to Chicago with hopes of writing The Jungle. The novel is also an important example of the " muckraking" tradition begun by journalists such as Jacob Riis. The sad state of turn-of-the-century work is placed for the American public to see, suggesting that something needed to be changed to get rid of American "wage slavery". The book writes about the poverty, bad living and working conditions, and sorrow among the working class.

Inspired by the Union Stock Yards in Chicago, Sinclair wrote this book to show the sufferings of the working class and to show the corruption of the American meatpacking industry during the early-20th century.

The Jungle is a 1906 novel written by journalist Upton Sinclair.
