SouthSudanSouth Sudan, officially the Republic of South Sudan, is a landlocked country in northeastern Africa that gained its independence from Sudan in 2011. Its current capital isJuba, which is also its largest city.Wauis a city in northwestern South Sudan, on the western bank of the Jur River,The Nileis a major north-flowing river in northeastern Africa, generally regarded as the longest river in the world. The Nile has two major tributaries, the White Nile and Blue Nile. The White Nile is considered to be the headwaters and primary stream of the Nile itself. The Blue Nile, however, is the source of most of the water and silt.