What legislation was created to break up monopolies and prevent unchallenged competition?

The Sherman Anti-trust Act, established in 1890, was designed specifically to combat monopolistic practices and promote fair competition in the marketplace. This legislation made it illegal to restrain trade or commerce and to engage in monopolistic activities. Its primary goal was to prevent companies from dominating the market to the extent that competition was stifled, which could result in higher prices and reduced choices for consumers.

This act laid the groundwork for anti-trust law in the United States and allowed for federal prosecution of companies acting in violation of the law. While the Clayton Anti-trust Act built upon the Sherman Act by addressing specific practices that could lead to anti-competitive behavior, the Sherman Act is often credited as the foundational law in the fight against monopolies.

The other options do not directly address the issue of monopolies. The Federal Trade Act primarily focuses on regulating unfair business practices and protecting consumers, while the Revenue Act pertains to taxation. Thus, the Sherman Anti-trust Act is the correct answer as it specifically targets monopolies and unchallenged competition.