How did the religion of islam change under the rule of abu bakr? a. the territory under muslim rule expanded rapidly. b. muhammad's teachings were altered drastically. c. muslim expansion ceased after defeat by persian forces. d. the majority of muslim followers abandoned islam.

I think A because he overtook many lands. 

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful