Which caliphate was Sunni?
The first caliphate, the Rashidun Caliphate, was ruled by the four Rashidun caliphs (Arabic: الخلفاء الراشدون, lit. 'Rightly Guided Caliphs'), Abu Bakr, Umar, Uthman and Ali RadiAllahu 'Anhum, who are considered by Sunni Muslims to have been the most virtuous and pure...