How were monopolies ended?

How were monopolies ended?
Because people criticized that monopolies were unfair and that companies that were using monopolies were too vague. So the government stepped in and made a law that monopolies were no longer allowed.Think of it as the game monopoly. What is your goal? Your goal is to get money and buy all of the companies that are in your way so you would buy their company and there you go, they were out of your way. I hope that helps.