B would be the answer. African Americans used violence to protest against racial inequality, where dozens were killed and news wasn't allowed access into the city of Atlanta for their safety.
In the 600's, Islam spread far North and East Africa through trade and the spread of the Arabic language. The expansion of the Arab Empire in the years following the Prophet Muhammad's death led to the creation of caliphates, occupying a vast geographical area and conversion to Islam was boosted by missionary activities particularly those of Imams, who easily intermingled with local populace to propagate the religious teachings.