Senegal owes its name to the river that borders it to the East and North and that originates from the Fouta Djallon in Guinea. Senegal is externally bounded by the Atlantic Ocean to the west, Mauritania to the north, Mali to the east, and Guinea and Guinea-Bissau to the south; internally it almost completely surrounds The Gambia, namely on the north, east and south, exempting Gambia's short Atlantic Ocean coastline. The climate is tropical with two seasons: the dry season and the rainy season.
Dakar, the capital city of Senegal, is located at the westernmost tip of the country on the Cap-Vert peninsula. About 500 kilometres (300 mi) off the coast, in the Atlantic Ocean, lie the Cape Verde Islands. During the 17th and 18th centuries, numerous trading posts, belonging to various colonial empires, were established along the coast.