Currency is the most important form of money in the present world. But it was not always like this. Earlier, coins usually made of gold or silver was used as a form of money. Coins have a natural or inherent value. Gold coins were used for large purchases while silver or copper coins were used for smaller purchases during the medieval period. However, this has been replaced with banknotes. Banknotes are worthless otherwise in terms of natural or inherent value unlike gold coins. These banknotes get the value by decree of the government who declare the banknotes as money.
Currency exchange is used to facilitate trade in good and services between countries that have different currencies. The trade in goods and services using various currencies become possible with exchange rates between any two currencies. The monetary authority that determines the production and distribution of the currencies as well as influences the value of the currency with reference to other currencies is usually the country’s Ministry of Finance or the central bank. For instance, in the United States it is the Federal Reserve System.
Some countries have similar names for their currencies. For instance, dollar is the name of the currency of such countries as United States, Australia, Malaysia, Singapore, Canada and Zimbabwe amongst others. Currencies such as Dinar, Rupee, Franc, Shilling, Real, Escudo, Frank, Gulden, Mark, Krone, Lira, Pound, Livre, Peso, Rial, Ruble, and Scudo are common to many countries. In European Union Euro is the common currency. Sometimes the currency of one country can also be tendered legally in other countries such as the US Dollar in El Salvador and Panama. Currencies are traded in the foreign exchange market. This is carried out for the purpose of either fostering international trade or for speculation. Description of foreign exchange trading is available in many books as well as websites in the Internet. Some of the useful books are Trading Made EZ, Tax Lien Investing and Forex Trading Explained
The exchange rate between two currencies is determined by the demand of each of these currencies. When the demand increases and supply is limited, the value of that currency rises. If the demand is less than available supply of the currency, the value of the currency falls.
