People have always exchanged commodities or services between each other. It is proved by the fact that almost nobody can live without other people and this can be understood in diverse ways. Not only is this crucial in psychological sense as a result of the fact that everyone doesn’t want to be alone and requires to love and be loved, but also it is related to the fact that we are unable to distribute everything starting from food and ending on different products that are needed for us to develop, on our own. This can be also observed in case of economies, which also lack of some resources and, as a result import them from other countries.