<Li> Cross River (Nigeria) - Nigeria </Li> <Li> Nuon River - Liberia, Ivory Coast </Li> <Li> Cestos River - Liberi </Li> <Ul> <Li> Nile - Egypt, Sudan, Ethiopia <Ul> <Li> Atbarah River - Sudan, Ethiopia </Li> <Li> Blue Nile - Sudan, Ethiopia </Li> <Li> Didessa River - Ethiopia </Li> <Li> Nile - Sudan </Li> <Li> Bahr el Zeraf - South Sudan </Li> <Li> White Nile - Sudan, South Sudan, Rwanda, Tanzania, Uganda </Li> <Li> White Nile - Sudan, South Sudan </Li> </Ul> </Li> <Li> Bou Regreg - Morocco </Li> <Li> Draa River - Algeria, Morocco </Li> <Li> Moulouya River - Morocco </Li> <Li> Oum Er - Rbia River - Morocco </Li> <Li> Sebou River - Morocco </Li> <Li> Chelif River - Algeria </Li> </Ul>

What african river is one of the ten longest rivers in the world