""What Is The Opium Trade"" is a book written by Donald Matheson in 1857. The book explores the opium trade, which was a major issue during the time of its writing. Matheson provides a detailed analysis of the trade, including its history, production, distribution, and consumption. He also examines the impact of the opium trade on society, particularly in China, where it had devastating effects on the population. Matheson argues that the trade is...