Interesting to read about the world history from the view of creating, transporting and trading salt. In our modern age, it is a common relatively uninteresting commodity, but in days prior to refrigeration salt was the primary (or only) means of preserving food and thus a critical commodity to civilizations.

It is more a history book than a story book which makes it a bit dry and slow going at times, but overall a good world history book from Romans, to Marco Polo, to American and French Revolutions to India.