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Until recently, salt bars were the standard currency of Ethiopia.

In ancient Greece, slaves were traded for salt, hence the expression “not worth his salt”.

In his painting The Last Supper, Leonardo da Vinci put an overturned salt cellar in front of the ill-fated Judas.

In old Japanese theatres, salt was sprinkled on the stage before performances to prevent evil spirits from casting a spell on the actors and ruining the play.

In Arab countries, salt was used to seal a bargain, and also as a sign of friendship.