Question

why was carnegie steel considered a vertical monopoly?
the company controlled every step of steel production, from raw materials to distribution
the company controlled all the steel plants in the country.
the company became the only source of steel after competitors went out of business.
the company was able to produce more steel than any other steel company in the world.

Explanation:

Vertical monopoly means controlling different stages of production. Carnegie Steel's control over all production steps (raw materials to distribution) fits this definition. The other options (controlling all plants, being sole source after competitors fail, producing more than others) don't specifically address vertical integration (controlling multiple production stages) which is key for a vertical monopoly.

Answer:

The company controlled every step of steel production, from raw materials to distribution.