""What Is The Opium Trade"" is a book written by Donald Matheson in 1857. It provides a detailed analysis of the opium trade, which was a major issue during the time period. The book covers various aspects of the trade, including its history, production, distribution, and consumption. It also explores the social and economic impact of the trade on countries such as China, India, and Britain. Matheson examines the role of the British East India Company...