History of Sudan
The modern Republic of Sudan was formed in 1956 and inherited its boundaries from Anglo-Egyptian Sudan, established in 1899. For times predating 1899, usage of the term "Sudan" for the territory of the Republic of Sudan was somewhat anachronistic, and may have referred to the more diffuse concept of the Sudan.
Bor, South Sudan
Bor became an administrative centre under the Anglo-Egyptian Sudan (1899–1956) for the Dinka people. Bor is the epicenter of the Second Sudanese Civil War. Dr. John Garang De Mabior, an officer in the Sudanese Army led a revolt in the town of Bor, in May 1983, leading to the birth of the Sudan People's Liberation Movement and Sudan People's Liberation Army (SPLM/SPLA). Bor was also the scene of the 1991 Bor massacre, where approximately 2,000 people were killed. Eventually South Sudan became independent on 9 July 2011.