B. They were the largest participants in the Great Migration.
C) allowing free and fair elections
I think it is B. Fait money only has value as a medium of exchange but idk put it and see if im right I researched it and got that so let me know if im right :)
Capturing the Solomon Islands would put Allied bombers in striking range of Japan.
The idea was to capture every island until the United States was in range of striking Japan.