Antitrust laws: The United States has implemented a range of antitrust laws, including the Sherman Antitrust Act and the Clayton Antitrust Act, which are designed to prevent companies from engaging in anti-competitive behavior. These laws have been used to break up monopolies in a variety of industries, including oil, telecommunications, and software.

Merger control laws: The European Union has implemented a range of merger control laws, which are designed to prevent companies from merging in a way that would create a monopoly or significantly reduce competition. These laws have been used to block or require changes to mergers in a variety of industries, including pharmaceuticals, telecommunications, and energy.

Price regulation: Japan has implemented a range of price regulation policies in industries such as electricity and gas, in order to prevent companies from using their monopoly power to charge excessively high prices. These policies have helped to keep prices in check, and have been credited with reducing the cost of living for consumers.

Nationalization: Bolivia has implemented a policy of nationalization in the oil and gas industry, which has given the government more control over these industries and reduced the power of foreign companies. This policy has been credited with increasing government revenue, and has been popular among many Bolivians who see it as a way to reduce foreign influence in the country.

Competition authorities: South Africa has established a Competition Commission, which is responsible for enforcing the country’s Competition Act and preventing anti-competitive behavior. The Commission has been active in a variety of industries, including banking, telecommunications, and food and beverage, and has been credited with promoting competition and limiting the power of monopolies.

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