Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A free market describes a market without economic intervention and regulation by government except to regulate against force or fraud. The terminology is used by economists and in popular culture. A free market requires protection of property rights, but no regulation, no subsidization, no single monetary system, and no governmental monopolies. It is the opposite of a controlled market, where the government regulates prices or how property is used. The theory holds that within the ideal free market, property rights are voluntarily exchanged at a price arranged solely by the mutual consent of sellers and buyers. By definition, buyers and sellers do not coerce each other, in the sense that they obtain each other's property rights without the use of physical force, threat of physical force, or fraud, nor are they coerced by a third party such as by government via transfer payments and they engage in trade simply because they both consent and believe that what they are getting is worth more than or as much as what they give up. Price is the result of buying and selling decisions en masse as described by the law of supply and demand.