Hutu family. Rwanda-Rundi is subdivided into the Kinyarwanda and Kirundi dialects, which have been standardized as official languages of Rwanda and Burundi respectively. It is also spoken as a mother tongue by the Tutsi and Twa. Additionally, many Hutu speak French, the other official language of Rwanda and Burundi, as a lingua franca. The Belgian-sponsored Tutsi monarchy survived until 1959, when Kigeli V was exiled from the colony (then called Ruanda-Urundi). In Burundi, Tutsis, who are the minority, maintained control of the government and military. In Rwanda, the political power was transferred from the minority Tutsi to the majority Hutu. In
Origins of Hutu, Tutsi and Twa communities (17.7% Afro-Asiatic genes found in the mixed Hutu/Tutsi population). While most supporters of the migration theory are also supporters of the "Hamitic theory", namely that the Tutsi came from the Horn of Africa, a later theory proposed that the Tutsi had instead migrated from nearby interior East Africa, and that the physical differences were the result of natural selection in a dry arid climate over millennia. Among the most detailed theories was one put forward by Jean Hiernaux, based on studies of blood factors and archeology. Noting the fossil record of a tall people with narrow facial features several