This is a very interesting book about the history of salt and covers its history from the earliest times to the modern day. Historians have found evidence that as early as 8000 years ago salt was mined in northern China." Worth ones salt" originated with the Romans, who paid their soldiers an allowance of salt. Salt has caused wars, the taxes collected from salt has enabled countries to finance huge structures such as the building of the great wall of China and the building of the Pyramids. Ancient Egypt had a lucrative trade in the export of salt fish and meat. Today, salt has lost its great economic and political significance simply because it is no longer scarce. I do hope you enjoy this book as much as I did.