In Madness, Cannabis and Colonialism, James H. Mills examines the lunatic asylums of colonial India, between the war of 1857 and the end of the nineteenth century. Throughout this period, the total number of mental patients in the country did not exceed five thousand at any given time.
Indigo plantation in India came under scholarly examination initially in the context of colonial oppression and the indigenous protest against it, as a part of the history of freedom struggle. Over the years, it has become an aspect of economic history and of the history of the peasant movement.
The history of narcotics in Asia in the last century and a half has been the subject of considerable controversy and significant revision over the last 20 years or so.