How does a corporation differ from a monopoly?

Monopoly implies the production and sale of unique products. Monopolies were originally created by the government. Such an enterprise was given privileges over others in the trade of a certain commodity. Monopoly implies no alternative for the buyer. Monopolies are limited by antitrust laws. A corporation is a legal entity that is incorporated by legal entities. He often has huge capital and can have a significant influence on politics. Sometimes corporations take a monopoly position by lobbying for certain laws or producing significant quantities of cheap products. Thus, competitors are destroyed and corporations receive a monopoly position without direct government orders to support this particular corporation.