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COLLUSION: A usually secret agreement among competing firms (mostly oligopolistic firms) in an industry to control the market, raise the market price, and otherwise act like a monopoly. The reason for the secrecy is that such behavior is illegal in the United States under antitrust laws. Collusion is a characteristic trait of oligopolistic industries. Intense competition and interdependent decision-making encourages oligopolistic firms to cooperate. One way to lessen the competition among an oligopolistic rival is to join forces through collusion. (The other way is through merger, but that's another entry.)

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SUPPLY DECREASE

A decrease in the willingness and ability of sellers to sell a good at the existing price, illustrated by a leftward shift of the supply curve. A decrease in supply is caused by a change in a supply determinant and results in a decrease in equilibrium quantity and an increase in equilibrium price. A supply decrease is one of two supply shocks to the market. The other is a supply increase.

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Today, you are likely to spend a great deal of time at a garage sale hoping to buy either a birthday greeting card for your aunt or a wall poster commemorating the moon landing. Be on the lookout for vindictive digital clocks with revenge on their minds.
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The portion of aggregate output U.S. citizens pay in taxes (30%) is less than the other six leading industrialized nations -- Britain, Canada, France, Germany, Italy, or Japan.
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