Charts the history and development of Twelver Shi'ism
As many as 40 different Shi i groups existed in the 9th and 10th centuries; only 3 forms remain. Why is Twelver Shi ism one of them? As the established faith in modern Iran, the majority faith in Iraq and areas in the Gulf and with its adherents forming sizeable minorities elsewhere in the region, it is arguably the most successful branch of Shi'ism.
Andrew Newman charts the history...