The furthest north you can go on the niger river is:
wilkes-bare
brussels
timbuktu
ghana

Timbuktu

Explanation:

The Niger River is one of the largest rivers in Africa by all parameters. The river starts in the Guinea Highlands, moves toward northeast, makes a turn, moves toward southeast, and then to the south, ending its flow t the southern coast of Nigeria, giving this river a half circular appearance. The furthest north this river gets is in its middle flow, with the largest settlement that is close to the northernmost point of this river being Timbuktu. The Niger River has always been crucial for the people of the region, and still is in the present, being by far the most important water body in Western Africa.

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