Sorry I'm posting so frequently I have a lot of ideas and questions in my head about Alternate History.
So, how could the Sassanid Empire hold off against the Rashidun Caliphate?
Is it even possible?
Is there anyway that in our modern world we could see a Zoroastrian Persia instead of an Islamic Iran (Persia)?
Any other comments would be great as well. Thank you to those who comment, as usual.