The three primary reasons are <em>the requirements for Confederate states to reenter the Union; overseeing the rebuilding of a Southern economic infrastructure; the fate of millions of freed slaves.</em> These were the main issues and hot topics of American Civil War during that time.
Answer: There are "Currently over 106,000 people in the U.S. on the waiting list for an organ transplant.
Explanation: Over 106,000 people
The answer on Edgen is:
something about the plot, or what happened during the airlift
something about the setting, or what West Berlin was like at the time of the airlift
something about my character and the people in my character’s life
something about how it felt to be trapped in West Berlin
something about how it felt to see the airlift in action