Forex, also known as Foreign Exchange, FX, forex trading or currency trading is a decentralized international market where currencies of all the countries are traded. Currency is an important asset for a country. The primary goal of forex is to administer the rates of currencies in relation to currencies. The need to exchange currencies is the primary reason why the forex market is the largest and most valuable financial market in the world. The foreign exchange market works through the central banks of the countries. So, the changes to the currencies are made and rendered by the foreign exchange market.