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Which consequence resulted from depleted long-term soil fertility in pre-Columbian raised-field agricultural systems used near Lake Titicaca?

A)Nitrogen runoff eutrophied water sources
B)Increased erosion blocked irrigation canals
C)Reduced productivity increased social stratification
D)Methanogenesis rate accelerated anaerobic decomposition

💡 Explanation

When raised-field productivity sharply declined due to nutrient depletion, the social reliance on food redistribution expanded extensively via the central control mechanism of labor demands on fewer productive plots, therefore elevating social stratification markedly, rather than only affecting environmental conditions or decomposition.

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