Answer:
The most accurate answer I think is C
Explanation:
Because in late 1900s South was modernized and the development of trucks, automobiles, planes made easy to carry crops
And the the agriculture was very easy and more efficient
No, because a PBS documemtary could not have witnessed something and retold it. It most likely is a secondary source, if they interviewed people who have witnessed the thing they are talking about.
I believe that finding the balance of drones would be putting a limit on how many drones a country can use at one time. I'm not sure on the other 2 questions.
I believe it was called greenbacks.
