"Oil!" is a novel written by the famous American writer Upton Sinclair. The book tells about important events in the history of industry and business in the United States at the beginning of the 20th century. The main focus of the work is on the history of the development of the oil industry, big businessmen and workers fighting for their rights. The book reveals to readers not only the complex relationship between capital and labor, but also the issues of business lobbying, corruption and social injustice. "Oil!" is a fascinating historical drama that makes you think about the origins of modern socio-economic problems.