AfricaRail
AfricaRail is a project to link the railway systems of Ivory Coast, Burkina Faso, Niger, Benin and Togo. These are all 1,000 mm (3 ft 3 3⁄8 in) gauge.
A future stage is proposed to link Mali, Senegal, which are also 1,000 mm (3 ft 3 3⁄8 in) gauge, and Nigeria and Ghana which are not.
Various links.
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Wikipedia