Question

How did vertical integration help the Carnegie Steel business?

It reduced the costs along the supply chain, from mining to transportation to manufacturing.
It gave the company a monopoly on the industry because it eventually owned its competitors.
It assigned one worker to a job, which helped reduce wasted time and speed manufacturing.
It provided quick and easy access to transportation methods, such as canals, rivers, and railways.

I think this one is A

Answer 1

Yup, vertical integration reduces cost. Businesses still do that today.

Answer 2

Thanks again :)