Demanda

MARKET
A market is any one of a variety of different systems, institutions, procedures, social relations and infrastructures whereby persons trade, and goods and services are exchanged, forming partof the economy. It is an arrangement that allows buyers and sellers to exchange things. Competition is essential in markets, and separates market from trade. Two persons may trade, but it takes atleast three persons to have a market, so that there is competition on at least one of its two sides. Markets vary in size, range, geographic scale, location, types and variety of human communities, aswell as the types of goods and services traded. Some examples include local farmers' markets held in town squares or parking lots, shopping centers and shopping malls, international currency andcommodity markets, legally created markets such as for pollution permits, and illegal markets such as the market for illicit drugs.
In mainstream economics, the concept of a market is any structure thatallows buyers and sellers to exchange any type of goods, services and information. The exchange of goods or services for money is a transaction. Market participants consist of all the buyers and sellersof a good who influence its price. This influence is a major study of economics and has given rise to several theories and models concerning the basic market forces of supply and demand. There aretwo roles in markets, buyers and sellers. The market facilitates trade and enables the distribution and allocation of resources in a society. Markets allow any tradable item to be evaluated and priced.A market emerges more or less spontaneously or is constructed deliberately by human interaction in order to enable the exchange of rights (cf. ownership) of services and goods.
The Demand
Ineconomics, demand is the desire to own something and the ability to pay for it. The term demand signifies the ability or the willingness to buy a particular commodity at a given point of time. Demand is...