Antitrust Laws:Laws that regulate the concentration of economic power and promote competition in the marketplace, such as the Sherman Act, Clayton Act, and Federal Trade Commission Act.
Monopoly:A market structure characterized by a single seller of a product or service with no close substitutes, allowing the monopolist to exercise control over price and output.
Collusion:An agreement between two or more firms to coordinate their actions, such as setting prices or limiting output, in order to restrict competition and increase profits.