Comprehensive empirical studies of the disarray in world agricultural markets appeared approximately 20 years ago … distortions in high-income countries, but there have been no comparable estimates for the world's developing countries. This … account for about of 90 percent of Sub-Saharan Africa's population, farm households, agricultural output, and overall GDP …

One of every two people in Sub-Saharan Africa survives on less than $1.25 a day. That proportion has changed little … affecting the incentives for farmers to produce and sell farm products remain a major influence on the extent of Africa …