Money is a foreign country that is bought by central banks or other government institutions and the existing laws of the country and is kept by banks or sellers to meet the buyer’s business or non-commercial obligations. Such a purchase of currencies is a form of communication between domestic and foreign money that the buyer does against the ceding of some of his existing gold that is in bars or coins. If the currency purchased abroad is not consumed conditional on the legal license of the Bank of banknotes, it can be released in the country if necessary, to support and equivalent of the new banknotes. Countries with surplus domestic productions on consumption and with significant export results and more of their imports, with enough foreign currency not only requiring foreign currency purchases, but also use their currency surplus to trade abroad.