Antitrust laws aim to achieve multiple objectives, including promoting economic efficiency, protecting consumers from unfair practices, and preventing the formation of monopolies.

The Sherman Act, enacted in 1890, was the first major antitrust law in the United States, prohibiting monopolies and unreasonable restraints of trade.

The Sherman Act consists of two main sections: Section 1 prohibits agreements and conspiracies that restrain trade, while Section 2 prohibits monopolization and attempts to monopolize.

Section 2 of the Sherman Act prohibits monopolization and attempts to monopolize, targeting entities that possess or seek to acquire monopoly power in a specific market.

The Clayton Act addresses various aspects of antitrust law, including preventing price discrimination, prohibiting mergers and acquisitions that may lessen competition, and regulating interlocking directorates.

Section 2 of the Clayton Act prohibits price discrimination, which involves selling the same product at different prices to different buyers, where the price difference is not justified by cost differences.

The FTC is a federal agency responsible for enforcing antitrust laws, promoting consumer protection, and regulating unfair or deceptive trade practices.

Section 3 of the Clayton Act prohibits tying arrangements, where the sale of one product is conditioned on the purchase of another product, and exclusive dealing contracts, which restrict a buyer from purchasing from other suppliers.

The Robinson-Patman Act aims to prevent price discrimination, regulate advertising and promotional allowances, and prohibit brokerage fees and commissions that may result in unfair competition.

Section 8 of the Clayton Act prohibits interlocking directorates, where individuals serve as directors or officers of competing corporations, to prevent potential conflicts of interest and anticompetitive behavior.

A horizontal merger occurs when two or more companies operating in the same market and at the same stage of production merge, resulting in a combined entity with increased market share.

A vertical merger occurs when companies operating at different stages of the production or distribution process merge, creating a single entity that controls multiple stages of the supply chain.

A conglomerate merger occurs when two or more companies operating in unrelated markets merge, resulting in a diversified entity with operations in multiple industries.

Section 2 of the Sherman Act empowers the government to break up companies that have monopolized or attempted to monopolize a specific market, restoring competition and preventing the abuse of market power.

A monopoly is a market structure in which a single firm controls a substantial share of the market, giving it significant market power and the ability to influence prices and output.