Derived from this Question and this Answer is a question about the history of the twelver Shia branch of Islam. Would you please notify in short how did this branch evolved through the ages with focus concentrated around the Safavid era? The main points that are considered to exist in an accepted answer are these:
- the main events that largely helped spreading this perspective (a list of events with references given for each can be very helpful, but only the main events please)
- does this claim that Safavid empire in Persia was the main reason for the twelver Shi'ism becoming the mainstream shia sect has anything to do with reality?