Definition: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: This country's central region is dominated by the Bi plateau, and major cities include Luena, Malanje, and Uiga. Major ethnic groups include the Kimbundu and Makongo. The Cunene forms a southern border of this country, while the Kasai and Kwango rivers form part of the boundary with its neighbor to the north. Huambo and Namibe are other large cities, and after achieving independence in 1975, it collapsed into a bloody and lengthy civil war between the pro-Soviet MPLA and the US-backed UNITA separatists. For 10 points, name the African country that has been at fragile peace since 2002 while also struggling to maintain control of Cabinda, with a capital at Luanda.
Output:
Social Science