Guinea-Bissau–Senegal border

The Guinea-Bissau–Senegal border is 341 km (212 m) in length and runs from the Atlantic Ocean in the west to the tripoint with Guinea in the east.

[1] The border starts in the west at Cape Roxo on the Atlantic coast, and the proceeds overland in a north-easterly directions via a series of irregular and straight lines past the 12th parallel north; at 12°40N it turns east and then follows a straight line to the Guinean tripoint.

[3][4] France had also taken an interest in the region, settling on the coast of modern Senegal in the 17th century; the French gradually extended their rule further inland from the mid-1800s onward.

The process culminated in the Berlin Conference of 1884, in which the European nations concerned agreed upon their respective territorial claims and the rules of engagements going forward.

[4] The border region has been used by various armed groups involved in the Casamance conflict and the Guinea-Bissau Civil War in the late 1990s.