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A former colonial possession of central Africa. Once a part of German East Africa, the territory was occupied by Belgian troops during World War I and later became a Belgian League of Nations mandate under the name Ruanda-Urundi. When independence was achieved in 1962, the region split into the present-day countries of Rwanda and Burundi.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Placename) a former territory of central Africa: part of German East Africa from 1890; a League of Nations mandate under Belgian administration from 1919; a United Nations trusteeship from 1946; divided into the independent states of Rwanda and Burundi in 1962
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


a former territory in central Africa, E of the Democratic Republic of the Congo: administered by Belgium as a United Nations trust territory 1946–62; now divided into the independent states of Rwanda and Burundi.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The Anglo-Belgian agreement November 1934 : the treaty modified the water boundaries of Ruanda-Urundi.
France and Britain controlled most of the African countries except for Congo (current Democratic Republic of the Congo), Ruanda-Urundi (Rwanda and Burundi) (7) controlled by Belgium, Angola and Mozambique by Portugal, and Togoland (Togo), Cameroon, Tanganyika (Tanzania), and again Ruanda-Urundi (Rwanda and Burundi) until World War I by Germany (8).
Les acariens de la famille Rhinonyssidae Vitzthum 1935 parasites des fosses nasals des oiseaux au Ruanda-Urundi (Note preliminaire).
Furthermore, the nature of colonial territories, especially after 1925 when Rwanda and Burundi became the 'Territory of Ruanda-Urundi' and were attached to Congo to form the 'Territory of Congo and Ruanda-Urundi' with a unified administration, a unified army and a single central bank, also contributed to the free movement of people from Rwanda and Burundi to the more prosperous Belgian Congo.
In Belgium, several non-Belgian European citizens who worked in the Belgian Congo or Ruanda-Urundi and contributed to the Belgian social security system were not granted the same social rights as their Belgian colleagues.
In 1923, the League of Nations mandated to Belgium the territory of Ruanda-Urundi, encompassing modern-day Rwanda and Burundi.
Although it had been part of German East Africa, and between 1919 and 1962 was one section of the Belgian Mandate/Trust Territory of Ruanda-Urundi, it had a minor, if forgotten, place in British Empire history.
Louis' first monograph was on Ruanda-Urundi, 1884-1919 (1963), but his most original work is a succession of books on decolonization, notably Imperialism at Bay, 1941-1945: the United States and the decolonization of the British empire (1977), The British empire in the Middle East 1945-1951: Arab nationalism, the United States, and postwar imperialism (1984), and two major edited collections for the British Documents on the End of Empire series covering the Macmillan government (co-edited with Ronald Hyam, 2000) and the period from 1964 to 1971 (with S.R.