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OPEN MARKET: A market, not unlike that stock market, that trades the U.S. Treasury securities that comprises the federal debt. U.S. Treasury securities are low risk and extremely secure financial instruments that are held by all sorts of investors, especially commercial banks. The Federal Reserve System is also a major holder of U.S. Treasury securities and participant in the open market. In fact, the Federal Reserve System used buying and selling of U.S. Treasury securities through the open market as a means of controlling the money, through what is appropriately termed open market operations.

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OLIGOPSONY

A market characterized by a small number of large buyers controlling the buying-side of a market. Oligopsony is the buying-side equivalent of a selling-side oligopoly. Much as a oligopoly is a market dominated by a few large sellers, oligopsony is a market dominated by a few large buyers. While oligopsony could be analyzed for any type of market it tends to be most relevant for factor markets in which a handful of firms control the buying of a factor. Two related buying side market structures are monopsony and monopsonistic competition.

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Today, you are likely to spend a great deal of time at a flea market hoping to buy either a birthday greeting card for your father or a T-shirt commemorating the first day of spring. Be on the lookout for defective microphones.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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