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 with no doubt one of those spheres that great number of people are not able to imagine their functioning without. There are considerable number of reasons why people think in such way, but in order to understand this tendency we ought to, first of all, be aware of the fact that the progress of this topic is related to the influence of two most important powers in each economy – demand and supply. It is connected with the fact that owing to the demographic progress as well as growing demands of the clients internationally, the side of demand tends to be higher than the supply.