This system is distinguished from others because it has a chief executive (the president) who is chosen by the people to serve a limited term in office with a distinct separation of powers (the executive branch) as well as specific limitations on exactly what he/she can do while in office.
"<span>B. Its labor system remained undisturbed" is very much not true. Almost the entire labor system of the South depended on slavery, which was abolished during the war. </span>
It would be "traditional forms of poetry" that was not characteristic of the beat movement and the beat generation, since much of this movement had to do with "doing away" with tradition in many different aspects of life.
I would say C ;)
It's pretty simple! Just ask me if you need anymore help!