Answer: I am pretty sure the answer is B. That answer is the one that makes the most sense. I read up on some articles about it and this was the answer closest to what I read about. Hope it helps! :)
Real GDP per capita for the United States is calculated by dividing real GDP by the number of people living in the country.
Concurring opinion is when one or more agree
unanimous opinion is when means almost everyone (or everyone) agrees
i.e:
you have to get a box into the house
out of 5 people, 1 person thinks you should hire someone to do it; that's a concurring opinion
out of 5 people, all 5 think you should just carry it into your house, that's a unanimous opinion
In turn, the railroads had a great impact on the steel industry. ... The rapid rise of the steel and railroad industries between the end of the Civil War and the early 1900s spurred the growth of other big businesses, especially in the oil, financial, and manufacturing sectors of the economy.
HOPE THIS HELPED!!!