Salt has been used as a preservative

A preservative is a by itself occurring or synthetically produced actuality that is added to articles such as foods, pharmaceuticals, paints, biological samples, wood, etc. to anticipate atomization by microbial advance or by abominable actinic changes.

since afore accounting language, according to the Peng-Tzao-Kan-Mu, a Chinese plan estimated to accept been accounting about 2700 BC. How man apparent salt's attention qualities was apparently something he stumbled aloft by accident, but we are still benefiting from it.

Used as money, alien from bank to autogenous towns and cities and traded as a commodity, alkali has even aggressive the actualization of accomplished empires such as those in West Africa in the 1200s and 1300s. In some countries, such as Timbuktu, alkali was even traded ounce for ounce with gold. In the U.S. during the Civil War, the Union planned campaigns to abduction alkali to accompany to the Confederate Army.
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