Answers

2016-02-02T17:42:22+08:00
Asin or Salt is considered a trade spice and flavoring for food is a very valuable form of currency. 
Salt also has other properties that can be used other than food flavoring. Like throwing Salt on snow or ice easily dissolves it during the cold season 

Salt was used as a preservative to keep food from spoiling. There were no refrigerators in Africa - the only way to preserve meat and other food products was by salting it
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