It was successful because when all blacks boycotted the buses, that takes a huge chunk of change out of the cities bus money which was a staple in how the city lived. Don't quote me on that though. Sorry it took someone 2 hours to respond to your question. Hope I helped :D
A is the correct answer because in older times religions were also spread by that method
Many settlers were willing to leave their homes and head west due to the dream of attaining a better life, usually thinking of the possibility of acquiring free or cheap land. Other ocassions were for example, the "gold rush" in which so many went to California in search of gold. Others went west hoping to find more freedom.
I think that the power struggle between the two Presidents was mostly brought to television since that was the time when television was widely used. It is about the armed race, that's the symbol for the wrestling match, during the cold war. This also shows that winning this match will be the dominant country in the world.