Ethiopia

The Nile is the longest river in Africa, about 6,650 kilometres long according to Britannica. It rises south of the Equator and flows north through north-eastern Africa into the Mediterranean Sea. Its main streams are the White Nile, whose headwaters feed Lakes Victoria and Albert, and the Blue Nile and the Atbara, which flow from the Ethiopian highlands. Britannica lists ten countries in its basin, from Burundi, where its most distant source rises, to Egypt.