
Chemama is the name of the region along Northern bank of the Senegal River, in Mauritania, a fertile band of land extending sixteen to thirty-two kilometers north of the river and containing alluvial soil. It is the only agricultural region in the country. The Chemama region has a rainy season that stretches from May to September. The region`s av....
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http://en.wikipedia.org/wiki/Chemama

Northern bank of the Senegal River, extending sixteen to thirty-two kilometers north of the river and containing fertile alluvial soil.
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https://www.photius.com/countries/mauritania/glossary/index.html
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