In microeconomics and strategic management, the term horizontal integration describes a type of ownership and control. It is a strategy used by a business or corporation that seeks to sell a type of product in numerous markets. Horizontal integration in marketing is much more common than vertical integration is in production. Horizontal integration occurs when a firm is being taken over by, or merged with, another firm which is in the same industry and in the same stage of production as the merged firm, e.g. a car manufacturer merging with another car manufacturer. In this case both the companies are in the same stage of production and also in the same industry. A monopoly created through horizontal integration is called a horizontal monopoly