Senegal's largest rivers—the Senegal, Siné, Saloum, Gambia, and Casamance—are sluggish, marsh-lined streams emptying into broad estuaries along the Atlantic Ocean. The Senegal River is the longest at 4,023 kilometers (2,500 miles).
CFA (Communauté Financière Africaine) Franc (XOF) = 100 centimes. Notes are in denominations of XOF10,000, 5,000, 2,000,1,000 and 500. Coins are in denominations of XOF500, 200, 100, 50, 25, 10, 5 and 1.
Politics in Senegal takes place within the framework of a semi-presidential, democratic republic. The President of Senegal is the head of state and the Prime Minister of Senegal the head of government. Executive power in Senegal is concentrated in the president's hands.