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In page History of the Central African Republic:

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The European occupation of Central African territory began in the late 19th century during the Scramble for Africa.[1] Count Savorgnan de Brazza established the French Congo and sent expeditions up the Ubangi River from Brazzaville in an effort to expand France's claims to territory in Central Africa.[citation needed] Belgium, Germany, and the United Kingdom also competed to establish their claims to territory in the region.[citation needed] In 1875, the Sudanese sultan Rabih az-Zubayr governed Upper-Oubangui, which included present-day Central African Republic.[2] Europeans, primarily the French, German, and Belgians, arrived in the area in 1885.[2]