It is Islam (Shiites)
Islam Zoroastrianism Christianity Judaism Baha'i Faith
it is Indian religon
The Bible.
Farsi is the official language of Iran.
Jomhuri-ye Islami-ye Iran (the Islamic Republic of Iran) is the official name of Iran. There is no other official name of Iran. In the West, Iran used to be known as Persia, if that's what you're asking.
Lebanon because the most of them speak french too
Islam
Persian is the official language of Iran.
The Emperor Constantine in 314 AD
Tehran is the capital of Iran. Iran's full official name is the Islamic Republic of Iran.
the official language of iran became english