South Sudan has a population of approximately 12 million (UN estimate, the exact figure is disputed) and a predominantly rural, subsistence economy. This region has been negatively affected by war for all but 10 of the years since 1956, resulting in serious neglect, lack of infrastructure development, and major destruction and displacement. More than 2 million people have died, and more than 4 million are internally displaced persons or became refugees as a result of the civil war and its impact.