Romesh Chunder Dutt argued as early as 1900, and present-day scholars such as Amartya Sen agree, that some historic famines were a product of both uneven rainfall and British economic and administrative policies, which since 1857 had led to the seizure and conversion of local farmland to foreign-owned plantations, restrictions on internal trade, heavy taxation of Indian citizens to support British expeditions in Afghanistan (see The Second Anglo-Afghan War), inflationary measures that increased the price of food, and substantial exports of staple crops from India to Britain.