Commercial Buildings Around The World

In historic times, the introduction of currency as a standardized money facilitated a wider exchange of goods and services. Numismatists have collections of these monies, which include coins from some Ancient World large-scale societies, although initial usage involved unmarked lumps of precious metal. The circulation of a standardized currency provides the major disadvantage to commerce of overcoming the "double coincidence of wants" necessary for barter trades to occur. For example, if a man who makes pots for a living needs a new house, he may wish to hire someone to build it for him. But he cannot make an equivalent number of pots to equal this service done for him, because even if the builder could build the house, the builder might not want the pots. Currency solved this problem by allowing a society as a whole to assign values and thus to collect goods and services effectively and to store them for later use, or to split them among several providers.
Today commerce includes a complex system of companies that try to maximize their profits by offering products and services to the market (which consists both of individuals and other companies) at the lowest production-cost. There exists a system of　International trade, which some argue has gone too far. But in the recent times commerce has taken shape to help in the development of the world economy.