Kionga Triangle

The Kionga Triangle (German: Kionga-Dreieck, Portuguese: Triângulo de Quionga) was a small region of German East Africa situated at the mouth of the Ruvuma River.

The Ruvuma served as the border between the German colony and Portuguese Mozambique, and the Kionga Triangle was the only section of German East Africa south of the river.

It became a German possession in 1894 but came under Portuguese control in April 1916 during World War I.

[1][2] The post-war Treaty of Versailles reaffirmed that the river was the border between Tanganyika, then under British control, and Portuguese Mozambique.

[3][4] Today, the former Kionga Triangle forms part of Cabo Delgado Province in Mozambique.