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A commodity, asset, or (most commonly) currency that may be exchanged for goods and services. Usually, the domestic government issues its own money and provides penalties to persons and businesses in its jurisdiction that do not accept it. Money and the money supply are integral to determining interest rates, inflation, and especially economic growth. There is no uniform agreement as to what qualifies as money; some economists include more mediums of exchange than other economists. Every society throughout history has used some sort of money, even bartering economies traded for something perceived to be equivalent. See also: Money supply, Liquidity.
A generally accepted medium for the exchange of goods and services, for measuring value, or for making payments. Many economists consider the amount of money and growth in the amount of money in an economy very influential in determining interest rates, inflation, and the level of economic activity. There is some disagreement among economists as to what types of things actually should be classified as money; for example, should balances in money market funds be included. See also money supply.