B. They love one another very much.
Hmm... for one single peep I think le term is autocracy ;)
Rosa Parks knew what she would sacrifice in order to be the starting point of the Civil Rights movement. Her refusal to give up her seat on the bus is a representation of courage because even with all the known consequences and repercussions she would face, she chose to do it anyways.
Well the word changed to tore, it would give more of a harsh tone. It makes it seem like it happened brutally and faster than if you used the word divided.
Hope this helps :)