The book "Fundamentals of Opinion on the Policy of Restricting the Importation of Foreign Grain", intended as an appendix to "Observations on the Corn Laws" by Thomas Robert Malthus, takes the reader to the era of the 19th century, when there were topical questions about the grain trade and the impact of these laws on the economy and social development. Author explores the mechanisms and consequences of restricting foreign grain imports, arguing his position and proving the importance of regulating this process. The book is an important source for understanding the economic thinking and political discussions of the time, and also reflects the views of the outstanding economist and researcher Malthus on the grain market and trade."