 Nyuma yintambara ya mbere yisi, mu 1916 ni cyo gihe Ububiligi bwatangiye kujya mu Rwanda no mu Burundi, ariko buyobora ku mugaragaro ibyo bihugu nyuma yo guhabwa ububasha numuryango wabibumbye, kuva mu 1924 kugeza mu 1962, ibyo bihugu bimaze kubona ubwigenge. 