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This paper deals with socioeconomic differences in mortality among infants, children, adults, and elderly during the period of mortality decline in the nineteenth century. It uses multilevel Cox regression controlling for shared unobserved factors at the family level, and also compares the magnitude of the observed differences between socioeconomic groups with the impact of unobserved factors at f

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In the late 19th century Meru smallholders established the first irrigation furrows on Mount Meru, Tanzania with the intent to prolong farming seasons and improve harvests. Soon neighbouring estate holders followed suit. Since then there has been a continuous construction of furrows by both smallholders and estates in the area. Smallholders’ furrows were from the onset managed as de facto communal