Excerpt:
The fact is that throughout history, salt--called sodium chloride by chemists--has been such an important element of life that it has been the subject of many stories and folktales (such as "Salt on a Magpie's Tail" from Sweden) and is frequently referenced in fairy tales. It served as money at various times and places, and it has been the cause of bitter warfare. It is used in making pottery.
MR Bloch Salt Archive "Salt Made the World Go Round."
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