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Gereza ya Nyamagabe yashyizweho mu 1963 ikorera munzu yahoze ibikwamo imyaka mu gihe cy’ umutware witwaga RUTAREMARA, yatangiye kubakwa mu 1966 itangira kwakira abafungwa mu 1968 ikaba yari ifite ubuso bungana na 815,1 m 2 yari ifite ubushobozi bwokwakira abagororwa 400.
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Nyuma ya Jenoside yakorewe Abatutsi muri 1994 , hifashishijwe inyubako zahoze zikoreshwa nk’ubuhunikiro bwa perefegitura ya Gikongoro n’indi yahoze ukoreshwa n’umushinga wa PEDEAGE,zaravuguruwe zigirwa Gereza ifite ubushobozi bwo kwakira Imfungwa n’Abagororwa 697 ikaba zicumbikiye uyu munsi Abagororwa b’Abagabo 456 bari mu milimo itandukanye nyongeramusaruro no kwagura inyubako za Gereza , muri 2019 inyubako yari Gereza 1968 nayo yaravuguruwe yubakwamo igorofa imwe iva ku bushobozi bwo kwakira abagororwa 400 ubu ikaba ifite ubushobozi bwo kwakira 1600 ikaba icumbikiye imfungwa n’abagororwa b’abagore 1452, muri rusange Gereza ikaba ifite ubushobozi bwo kwakira imfungwa n’abagororwa 2297 .
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Ubu Gereza icumbikiye uyu munsi imfungwa n’abagororwa 1908
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Muri uyumubare 1908 hiyongereyeho abana 45 bari munsi y’imyaka 3 babana na ba nyina bose bakaba 1953.
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Gereza ifite ubushobozi bwo kwakira abagororwa 2297 ariko icumbikiye 1953 tukaba nta bucukike dufite kubera ko dufite ijanisha rya 85,2%.
