Former dependency of imperial Germany, corresponding to present-day Rwanda and Burundi, the continental portion of Tanzania, and a small section of Mozambique.
German commercial agents arrived in 1884, and in 1891 the German imperial government took over administration of the area. During World War I, it was occupied by the British, who received a mandate to administer the greater part of it (Tanganyika Territory) by the Treaty of Ruanda-Urundi ) was entrusted to Belgium.