Yes it sure was good luck on answerin it
Answer:
A tariff is tax on certain items imported into the US or other countrys
Not 100% sure but i would go with B
The practice of vertical integration contributed most to Andrew Carnegie's ability to form a monopoly. Vertical integration is a process of combining different stages of production such as manufacturing, supplying, distributing, retailing, etc, under the umbrella of one company.
Trajan is the answer for this
