Soon after Muhammad’s death, the Muslim world split into which two groups?

They split into the Sunni and the Shia.

Explanation:

The Sunni Muslims believed there shouldn't be a leader after the death of Ali (prophet Muhammad's pbh nephew)

The Shia believed there should be a new leader

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there were 6 major base camps.   the base camps were located in alva, fort reno, fort sill, the madill provisional internment camp headquarters, mcalester and camp gruber.