I think that the question is trying to ask you to explain the theory of Communism (what its ideas and principles are) and then to give examples on how people have tried to put the theory into practice throughout history (Communism is not very rosy when put into practice. Read about Stalin, the revolts in Hungary and Czechoslovakia by the people against Communism, the Chinese Cultural Revolution, Khmer Rouge etc. But then again, the US propping up dictators around the world, such as in Chile and the Congo, to prevent a Communist kind of government taking control over those countries wasn't that rosy too.).
