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.

b. the passage of the equal rights amendment  

explanation:

this mean that anything that someone else could do they could do

the installment plan of the 1920s, an arrangement that allowed people to buy what they wanted with a small down payment and pay off the rest in monthly installments, provided americans a way to own what they did not have the money to buy.

less available tax revenue

this basically means that when they get money from taxes wirth having a lower gdp they get less then what others have with a higher gdp