Opolopo nkan ni o sele laarin ogorun-un marun-un odun yii.Igba ti won ko won leru Angola o ti si nigba ti Diogo Cao ati awon to ku re de Ijoba Kongo ni senturi keedogun.. 
The ríiline along the Niger river is important in Maintaining the temtéture of the water because the slightest change in water temperature can be fátal to certain Marine species.. 