摘要：As a free society must be based on voluntary exchanges, we will see what they consist of and define them, developing their two types: direct voluntary exchanges, with their limitations, and the indirect ones, with the benefits they entail. Indirect ones need a means for their execution, money, which we will define, studying its origin and the characteristics that must be accomplished so that a means of exchange can be considered as money. We will point out the types of money, and the importance they have in the formation of prices, and also observe the determination of the purchasing power of money itself. It will be pointed out why we think that cryptocurrencies cannot be considered as money, and the work will be finished with the characteristics that money should have in a free society.
关键词：Austrian School; Escuela Austriaca; Exchanges; Intercambios; Money; Dinero; Interest Rate; Tipo De Interés; Prices; Precios; Economic History; Historia Económica
