The highlands that provide the sources of River Niger are?

The highlands that provide the sources of River Niger are the Plateau of Southern Mali and North Central Plateau of Nigeria. The Niger River is one of the major rivers in Africa and it originates from the highlands of West Africa. The river has two main sources, one in the Plateau of Southern Mali and the other in the North Central Plateau of Nigeria. These highlands provide the necessary elevation and precipitation for the river to flow downstream, making it an important water source for several countries in West Africa.