Why are individual states denied the currency power? wikianswers?

the different kinds of money would cause confusion.

Explanation:

Framers gave Congress the power to coin money, meaning the currency power, so there would be an only national monetary system controlled by the federal government.

Section 8 of the Constitution authorizes Congress to coin money and to control its value, whiles section 10 denies that right to the individual states.  

In 1833, since the Second National Bank was shut down by President Andrew Jackson, state banks started issuing their own currencies, which drove to a rush of land speculation that led to the Panic of 1837.

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.