There are a lot of different businesses out there. They sell many different things. That is because the United States has a free market economy.
Anyone can start a business. A business can make any product or provide any service allowed by law. Businesses are usually in competition with one another. This means they want to sell the most goods or services (and make the most profit).
In a free market, the rules of supply and demand are important. Supply is the amount of goods or services that a business provides. Demand is the amount of goods or services consumers are willing to buy. Look at the chart. It shows how supply and demand affect price.
