Famine and Drought-Driven Displacement

A central finding of modern famine studies, most influentially articulated by economist Amartya Sen in his 1981 book Poverty and Famines, is that famines are rarely caused by food-supply shortfalls alone; Sen's "entitlement approach" argues that famine typically results from a collapse in specific groups' economic ability to command or access available food — their "entitlements," whether through production, market exchange, or state transfer — even when aggregate food supply has not fallen as far as the death toll would suggest. Sen's foundational case study was the Bengal famine of 1943, in British colonial India, which he argued killed an estimated 2 to 3 million people despite the region having a larger rice supply that year than in 1941, a year without famine, implicating wartime price inflation, speculative hoarding, and colonial administrative failures — including the diversion of transport and grain toward the war effort and a restrictive colonial response to early warning signs — rather than an absolute drought-driven crop failure as the primary cause. This entitlement framework has become foundational to the modern international humanitarian and famine-early-warning field, directly informing the methodology behind the Integrated Food Security Phase Classification (IPC) system, developed in the early 2000s and now used by the United Nations and partner agencies to formally classify famine conditions.