 Complete the following phrase:  It gained independence from the Republic of the Sudan in 2011, making it the most recent sovereign state or country with widespread recognition as of 2021. It includes the vast swamp region of the Sudd, formed by the White Nile and known locally as the Bahr al Jabal meaning Mountain River. Sudan was occupied by Egypt under the Muhammad Ali dynasty and was governed as an Anglo-Egyptian condominium until Sudanese independence in 1956. Following the First Sudanese Civil War, the Southern Sudan Autonomous Region was formed in 1972 and lasted until 1983. A 