Answer:
combining his companies into one company, and controlling all aspects of steel production
Explanation:
A market structure portrayed by a solitary merchant, selling an extraordinary item in the market. In a monopoly market, the merchant faces no opposition, as he is the sole dealer of merchandise with no nearby substitute.
The business practice which contributed most to Andrew Carnegie’s ability to form a monopoly is ''combining his companies into one company, and controlling all aspects of steel production''.
Answer:
D. combining his companies into one company, and controlling all aspects of steel production.
