The Southern Sudan Autonomous Region was an autonomous region that existed in Southern Sudan between 1972 and 1983.[1] It was established on 28 February 1972 by the Addis Ababa Agreement which ended the First Sudanese Civil War.[2] The region was abolished on 5 June 1983 by the administration of Sudanese President Gaafar Nimeiry.[3] Revocation of southern autonomy was one of the causes of the Second Sudanese Civil War which would continue until January 2005, when southern autonomy was restored.