The Gambia River.

The Gambia, is a country in Western Africa. It is the smallest country on the African continental mainland and is bordered to the north, east, and south by Senegal, and has a small coast on the Atlantic Ocean in the west. The River Gambia flows through the centre of the country and empties into the Atlantic Ocean. On 18 February 1965, The Gambia became independent from the British Empire. The capital is Banjul.