In two to three sentences, describe how antitrust laws encourage competition

Antitrust laws prevent monopolies.

A monopoly is a company or businesses that dominates a particular market to such an extent that there is no viable competition to that company.

A monopoly does not have any other serious competition in a market, the monopoly is greater liberty to charge higher prices and offer lower quality prices.

Antitrust laws break up or limit the size of monopolies, allowing other companies to enter a market.