Coinage

Coinage is a form of Technology and Culture.

Description
The earliest medium of exchange was cowry shells, but round coins made from copper, bronze or iron proved a more practical type of money. Chinese coins had holes in the center allowing them to be strung together in groups of 100 or 1000, and carried over the shoulder. The development of coinage will facilitate the development of trade and allow a greater range of government taxation measures.

Effects

 * Enables construction of: Market, Caravansary
 * Enables Edicts: Salt Tax