Modern monetary systems are far superior to the barter system people used in the old days. Inefficiency and lengthy negotiation were the main reason the barter system became obsolete. Later, bronze, silver and gold came to be used as mediums of exchange in trade.

Globally, currency trading is a major business, and it is estimated that over US$2 trillion is traded everyday. The system of currency trading is also referred to as foreign exchange, Forex, or FX for short. The currencies traded have a relative value to other currencies. The trading uses the purchase and sale of large quantities of currency to leverage the shift in order to earn profit.

Fluctuation in the relative value of a currency is caused by two reasons. The first reason being the