States of South Sudan in the context of Ruweng Administrative Area

Central Equatoria is a state in South Sudan. With an area of 43,033 square kilometres (16,615 sq mi), it is the smallest of the original South Sudanese states. Its previous name was Bahr al-Jabal (also Bahr-el-Jebel), named after a tributary of the White Nile that flows through the state. It was renamed Central Equatoria in the first Interim Legislative Assembly on 1 April 2005 under the government of Southern Sudan. Central Equatoria seceded from Sudan as part of the Republic of South Sudan on 9 July 2011. The state's capital, Juba, is also the national capital of South Sudan. On October 2, 2015, the state was split into three states: Jubek, Terekeka, and Yei River. The state of Central Equatoria was re-established by a peace agreement signed on 22 February 2020.

Simon Gatwech Dual (also spelled Simon Gatwitch) is a Sudanese rebel Major General who was born in around the late 1930s in what is today Uror County, Jonglei state, South Sudan.

Upper Nile is a state in South Sudan. The White Nile flows through the state, giving it its name. The state also shares a similar name with the region of Greater Upper Nile, of which it was part along with the states of Unity and Jonglei. It had an area of 77,823 square kilometres (30,048 sq mi). Malakal was the capital of the state. The towns of Upper Nile State include Akoka, Melut, Renk, Kodok along with its numerous counties such as Ulang County, Maiwut County and Nasir County. The Greater Upper Nile is the location of the Fashoda Incident that ended the "Scramble for Africa", and is located in the historical state of Upper Nile. The Upper Nile State seceded from Sudan as part of the Republic of South Sudan on 9 July 2011.

In October 2015, the states of South Sudan were reorganized into 28 states by President Salva Kiir. This was reversed as the result of a peace agreement signed on 22 February 2020.