Antitrust regulations are laws designed to promote fair competition and prevent monopolies in the marketplace. They aim to protect consumers by ensuring that no single company can dominate an industry, which can lead to higher prices and fewer choices. These regulations help maintain a level playing field for businesses, encouraging innovation and efficiency. In the United States, the main antitrust laws include the Sherman Act, the Clayton Act, and the Federal Trade Commission Act. These laws empower government agencies, like the Federal Trade Commission (FTC), to investigate and take action against companies that engage in anti-competitive practices, such as price-fixing or market allocation.