The Nile flows from south to north over 6,695km from its first tributary - the Ruvyironza River in Burundi - before emptying into the Mediterranean Sea. The Nile Basin, which is a network of connected ecosystems, spans 11 countries: Burundi, Rwanda, Tanzania, Kenya, the Democratic Republic of the Congo, Uganda, Ethiopia, Eritrea, South Sudan, Sudan and Egypt. The river consists of two main tributaries known as the White Nile and the Blue Nile. These rivers meet at the Sudanese capital,...