The Second Sudanese Civil War was a conflict from 1983 to 2005 between the central Sudanese government and the Sudan People's Liberation Army. It was largely a continuation of the First Sudanese Civil War of 1955 to 1972. Although it originated in southern Sudan, the civil war spread to the Nuba mountains and the Blue Nile. It lasted for 22 years and is one of the longest civil wars on record. The war resulted in the independence of South Sudan six years after the war ended. Roughly two million people died as a result of war, famine and disease caused by the conflict. Four million people in southern Sudan were displaced at least once (and normally repeatedly) during the war. The civilian death toll is one of the highest of any war since World War II and was marked by numerous human rights violations, including slavery and mass killings. Background and causes The Sudanese war is often characterized as a fight between the central government expanding and dominating peoples of the periphery, raising allegations of marginalization. Kingdoms and great powers based along the Nile River have fought against the people of inland Sudan for centuries. Since at least the 18th century, central governments have attempted to regulate and exploit the undeveloped southern and inland Sudan. Some sources describe the conflict as an ethnoreligious one where the Muslim central government's pursuits to impose sharia law on non-Muslim southerners led to violence, and eventually to the civil war. Douglas Johnson has pointed to an exploitative governance as the root cause. When the British governed Sudan as a colony they administered the northern and southern provinces separately. The south was held to be more similar to the other east-African colonies – Kenya, Tanganyika, and Uganda – while northern Sudan was more similar to Arabic-speaking Egypt. Northern Arabs were prevented from holding positions of power in the south with its African traditions, and trade was discouraged between the two areas. However, in 1946, the British gave in to northern pressure to integrate the two areas. Arabic was made the language of administration in the south, and northerners began to hold positions there. The southern elite, trained in English, resented the change as they were kept out of their own government. After decolonization most power was given to the northern elites based in Khartoum, causing unrest in the south. The British moved towards granting Sudan