Rice

Haiti used to be a net exporter of rice. In a loan restructuring deal in 1995 Aristide was forced to accept the conditions of the IMF and open its markets to international trade. Subsequently, the U.S.  flooded the country with cheap state-subsidized rice and drove the agricultural workers off the farms and into the city. Seed stocks disappeared. When Haiti became food-dependent, the price of rice went up, and the peasants had no money to buy the rice. Some part of Haiti's intractable problems of poverty and malnutrition can be attributed to this. Incidentally, only 2% of international aid is invested in agriculture.