It says that London and Africa are the places of darkness.
The upper class Because they got all the advantages of it with none of the bad of it but that could also be the working class because they got more jobs and were able to find jobs faster and easier depends on what your lesson is focusing on
The North was the side to ban slavery. The Missouri Compromise, as set into place by Thomas Jefferson split the slave-permitting south from the abolitionist North.
Because the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.
Im gonna say B) or C) they both seem to make sense.