<span>B.Approximately 1/3 of Senators are up for re-election every two years.</span>
it was a mix of A. B. C. just not slaves, slaves weren't a huge until the late 1690's.
Option A seems to be correct because Christian concepts dominated the educational institutions of many African Kingdoms.
Option B seems to be correct as well because nearly half of Christians and nearly 30 % of Muslims felt that one God was like their traditional supreme being.
Option C seems to be wrong because wherever Islam dominated ,people were forced to practice Islam because of Islamic Extremism.
Option D seems to be wrong because Islam plays an important part in regions where Islam is a major religion.