Why did the Sasanian empire fall?
user
The Sasanian Empire lasted until 651 CE when it was overthrown by the Arab Rashidun Caliphate.
assistant
How it was overthrown?
user
It was overthrown during the Muslim conquest of Persia, also known as the Arab conquest of Iran, was carried out by the Rashidun Caliphate from 633 to 654 AD and led to the fall of the Sasanian Empire as well as the eventual decline of the Zoroastrian religion
assistant