When the fourth caliph was murdered by other muslims causing a great disturbance. Some people wanted Ali as the caliph when others wanted someone else.When Ali was murdered the groups split eventually being caleled Sunni and Shi'a.
Answer:
social psychologists
Explanation:
According to my research on studies conducted by various psychologists, I can say that based on the information provided within the question she is most likely to be a social psychologists. This can be said because Professor Hume is studying effects of people's levels of self-esteem which is determined by the individual's societal environment.
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