Currency Trading

How many countries in order to determine the value of money and what is considered? If not, the land which the body and the world account Most of the major industrialized countries do not determine the value of their own money and do not let them fly again Currens others. Brokers in foreign Securities, banks [...]

Is there any truth to make money on world currency markets? How it works mathematically. As part of losing value to the transfer enhancing the exchange of resources to obtain benefits. At least that's what I heard. Sort of the way U.S. $ 100,000, which corresponds to P $ 1,013,684.73. So if the dollar for [...]