PersianBoy: Congratulations on a very interesting thread.
I have a slightly different set of questions, based in a curiousity of my family history, but I feel I need to give some social history for wider understanding of the questions and also to give context...
Background:
I am of Indian heritage. My family partly hail from the Parsi community, the old Zoroastrians that fled Persia for the west of India around the 10th century AD. Many such communities of these Parsis (the preservers of Persia's most ancient religion) are found in Bombay/Mumbai but there are also large numbers down the west coast of India too. If I am not mistaken, I believe that the largest numbers of Parsis today are in fact in India, not Iran. We no longer follow this religion by the way, owing more to the passage of time, migration and other cultural influences.
I am told by my ancestors, and the (sometimes quite cryptic and vague) histories they have left us behind, that the reasons for fleeing from Persia (c.10th century AD) were twofold:
a) A major drought took place, with a major river drying up severely. Fresher fields needed to be found. Apparently, it was a significant cause of large scale migrations across Persia and north India around this time.
b) That they were fleeing political and religious persecution. Indian rulers gave refuge.
Question relating to a)
~ Have you heard of this drought event?
~ I still have no idea what river this may have been. Any ideas or clues?
And to b)
~ Do you have any knowledge of this historical persecution?
~ What is left of Zoroastrianism and its legacy in today's Iran?
~ What is the prevailing attitude towards Parsis and indeed Zoroastrianism today?
~ Would they be welcomed back for example?
Bonus trivia questions:
~ Did you know that the singer from Queen, Freddie Mercury, was a Parsi?
~ Does it please you to hear that the descendants of these migrants fought the British and their claim to rule India,
tooth and nail?
EDIT:
Whomp: You have spelt "spelled" wrong btw

(and it's late cos I have been on the wheels of steel)