What event led to the formation of the caliphates? A. The need to control large geographical areas

B. Power struggles after the death of Muhammad

C. They were formed to develop trade networks

D. The leaders were told to create the caliphates in a vision from Allah

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

me with my last question i posted