I think its C. they recognized Abu Bakr as the rightful caliph of islam.
The correct answer among all the other choices is C. The feuds between religious and secular power over investiture. The fall of the western Roman empire contributed most directly to this circumstance. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
D which would be armed conflict with the Southern soldiers
It is the privilege, claimed by the president for the executive branch of the US Government of withholding information in the public interest. <span />
Answer:
Si Leonidas ay hari ng mga spartano na humarang sa mga persiano sa thermopylae noong 480 bce
Explanation: