Every country came out with their own banknotes or currencies. They were given different names such as Dinar, Franc, Lira, Krone, Mark, Peso, Pound, Rial, Ruble, and Rupee. Some gave the same name but of different value such as dollar for the United States, Canada, Australia, Malaysia, Singapore and Zimbabwe. Some countries adopted a common currency as Euro by the European Union. The trade between countries was to be transacted with their respective currencies. This required that exchange rates between currencies are to be fixed. These were fixed by the central bank and the government. Banks and governments have to sell and buy currencies in order to facilitate international trade.