Opium was the most common and the most profitable trade good and comprised 33–54% of all goods shipped from Bengal to the East between 1815 and 1818. Carl Trocki described "the British Empire east of Suez as of 1800 as essentially a drug cartel."[253] James Bradley stated: "opium accounted for 15 to 20 percent of the British Empire's revenue" and "between 1814 and 1850 [...] (removed) 11 percent of China's money supply".[254][page needed]
- 253: Trocki, Carl (2019). Opium and Empire: Chinese Society in Colonial Singapore, 1800–1910. Cornell University Press. pp. 50–58. ISBN 978-1501746352.
- 254 Bradley, James (2009). "Chapter 10". The Imperial Cruise, a Secret History of Empire and War. Little, Brown. ISBN 978-0316049665.
