Slavery in Sudan began in ancient times, and had a resurgence during the Second Sudanese Civil War (1983–2005). During the Trans-Saharan slave trade, many Nilotic peoples from the lower Nile Valley were purchased as slaves and brought to work elsewhere in North Africa and the Orient by Nubians, Egyptians, Berbers and Arabs.
Starting in 1995, many human rights organizations have reported on contemporary practice, especially in the context of the Second Sudanese civil war. According to reports of Human Rights Watch and others, during the war the government of Sudan was involved in backing and arming numerous slave-taking militias in the country as part of its war against the Sudan People's Liberation Army (SPLA). It also found the government failed to enforce Sudanese laws against kidnapping, assault and forced labor, or to help victims' families locate their children.