Short data about the origin and development of the currency exchange market. Currency trading has a long history and can be traced back to the ancient Middle East and Middle Ages when foreign exchange started to take shape after the international merchant bankers devised bills of exchange, which were transferable third-party payments that allowed flexibility and growth in foreign exchange dealings.The modern foreign exchange market characterized by periods of high volatility (that is a frequency and an amplitude of a price alteration) and relative stability formed itself in the twentieth century. By the mid-1930s the British capital London became to be the leading center for foreign exchange and the British pound served as the currency to trade and to keep as a reserve currency.