Answer:
They did not give the central government enough power to act.
Explanation:
It's not B because the states had majority of the power (They had majority of the power because of fear of a tyrannical leader), not C because checks and balances wasn't created in the USA until 1787 (Constitution) and not D because the federal government couldn't even tax with the articles of confederation.
Robber barons is a term that was uxed to describe people who were able to amass great richess with their entrepreneurial cunning. Capitals of industry describes the same people but from a different perspective. It's very likely that the people who were talking about them were from different spheres of social life. It's more likely that the capitals of industry is more accurate.
Agriculture went through a major transformation after WWII. New tractors, other motorized farming equipment, fertilizers, and establishing crop rotation farming made farming easier and more productive.
Since these new farming ideas and technologies improved farming and made it more efficient, a farmer could farm bigger tracts of land by himself.
This also had a cultural impact on Georgia. After WWII, more people moved to cities to look for jobs, since small farmers lost their jobs. They moved to urban areas to look for factory/business jobs.
I believe the answer is: Giving them back.
With current development of technology and social media, we could read from various different sources and easily provided the new knowledge for other people with one single touch.
One positive thing about this is that it make the flow of information become much more easier, but one negative thing about it is that it is really hard to separate which knowledge are true and which are not.