Today it is Islam.
yes
Ancient Persia did.
The most widely practiced religion in Ancient Persia is now known as Zoroastrianism. However, in the centuries after the Islamic conquest of Persia, most Persians converted to Islam (both by choice and from fear of violence). Islam (specifically Twelver Shiite Islam) is the dominant religion among ethnic Persians today.
The Ancient Romans who lived in Italy had the Ancient Roman Religion, it was polytheistic and didn't have an official name.
I think It's Islamit is but ancient Egypt had their own religion
Darius the mede was a ruler that let slaves keep their religion and greatly expanded persia.
The traditional religion of Persia is Zoroastrianism. The official religion of modern Iran is Islam. However, there are large minorities of Baha'is, Christians and Druzes.
Answer: IslamThe state officially declares a particular religion as theirs.
Ancient Persia would now be Iran.
A governor of a province in ancient Persia was known as a satrap.
Prior to the conversion to Islam, the predominant religion of Persia was Zoroastrianism.