What has become the most common factor that has made trade so influential and required element of existence of majority of people currently?

Trade is surely one of those spheres that majority of people are not able to imagine their life without. There are considerable number of reasons why people think in this kind way, but in order to explain this tendency we ought to, first of all, be aware of the fact that the development of this topic is connected with the influence of two most influential powers in each economy – demand and supply. It is connected with the fact that due to the demographic development as well as increasing demands of the customers internationally, the side of demand tends to be more visible than the supply.