Hi everyone i need some information about the Muslim invasion of Iran, basiclly i need sources that are not Iranian nor Muslim. I need these questions to be answered.
1.)Did the Caliphate send any letters to the Iranians asking them to convert and or paytribute to them.
2.)Did the Ummayad's really go around and kill Zoroastrian priests and people who knew how to read and right Pahlavi.
3.)Were Iranians forced to convert to Islam or converted willingly or both.
4.)What were the main reasons for Babak Khorramdin and other Iranians to rebel against the Abbasid Caliphate, by this i mean what were the Abbasids doing to cause such a huge rebelian.