Hmph.. I believe it's A.
Love, grace-
The answer I believe is C...
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.
Answer: below
Explanation: Nuclear bomb has highly enriched uranium going into critical mass and exploding with force in the order of megatons
an atomic bomb is made up of a fissile element like uranium, which is enriched in the isotope that can sustain a fission nuclear chain reaction.
Hope this helps you