“Sudan’s economy relies mainly on rainfed agriculture. Key cereal crops are sorghum, millet, and wheat. Livestock numbers are estimated at more than 140 million cattle, sheep, goats, and camels. Sudan’s population is about 39 million, with annual growth rates of 2.1–2.6 percent. Within Sudan, an estimated six million people have been displaced, mostly by drought, desertification, and famine in the north, and by conflict, famine, and flood-induced epidemics in the south.”