In economics there are four different types of market structures. They are as followed:
1) Perfect competition- This allows for businesses to compete against each other for consumers.
2) Monopoly- This is when one business or corporation corners a market. This occurs when a business is the only supplier of a good/service.
3) Oligopoly- This is when a small amount of businesses control a market/product.
4) Imperfect competition
In your question then, the correct answers are : Monopoly, perfect competition, and oligopoly.
The steam engine as it was to be used in many machines such as trains, steamboats, factories, farming equipments, etc.
The telephone and the light bulb
The watergate scandal happened when United States President Richard Nixon a republic was tied to a crime Ron which former FBI and CIA agents broke into the offices of the Democratic Party and George McGovern.
