Which term denotes an unlawful agreement between competitors to monopolize a market?

The term that denotes an unlawful agreement between competitors to monopolize a market is collusion. Collusion occurs when companies or individuals in the same industry cooperate or conspire to unduly restrict competition, manipulate market prices, or create a monopoly. This practice is illegal as it undermines fair competition and can lead to higher prices and lower quality products or services for consumers. It is crucial to understand this concept as it highlights the importance of maintaining a competitive market environment, which is fundamental to economic principles and consumer protection.