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Rwanda-Northern-Karongi this place was high risk zone for people, after relocation now is a green mountain made of terraces. Terraces are principally a successful design to reduce soil losses through enhanced retention and infiltration of runoff, to promote permanent agriculture on steep slopes and to promote land consolidation and intensive land use. This was done by community-based initiative called Umuganda which is culture of self-help and cooperation in families, friends and neighbours to h

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