The achaemenids (c550-330 bc) were important for their development of government administration, the appearance of literature written in cuneiform, and the spread of zoroastrianism during this period there was also a great flourishing of persian art and architecture. It was also during the later achaemenid era that many of the divinities and divine concepts of proto-indo-iranian religion(s) were incorporated in zoroastrianism, in particular those to whom the days of the month of the zoroastrian calendar are dedicated. Zoroastrianism is a religion and philosophy based on the teachings of prophet zoroaster (also known as zarathustra, in avestan) it was probably founded some time before the 6th century bce in persia (iran. Zoroastrianism, the ancient pre-islamic religion of iran that survives there in isolated areas and, more prosperously, in india, where the descendants of zoroastrian iranian (persian) immigrants are known as parsis, or parsees.
(we do not know whether the achaemenids adhered to the teachings of the bactrian prophet zarathustra, although later persian dynasties certainly were zoroastrians) it should be stressed that there is not a single piece of contemporary evidence that calls cyrus or cambyses achaemenids. If one were to assess the achievements of the achaemenid persians, surely the concept of one world, the fusion of peoples and cultures in one 'oecumen' was one of their important legacies figure 2. Zoroastrianism, or mazdayasna, is one of the world's oldest religions that remains activeit is a monotheistic faith (ie a single creator god), centered in a dualistic cosmology of good and evil and an eschatology predicting the ultimate destruction of evil.
Zoroastrianism flourished for over a thousand years as the state religion of the three great iranian empires: the achaemenids, the parthians and the sasanians, but was ousted by islam following the arab conquest of iran in 651 ce. Opinions range from those who hold that the achaemenids were definitely not zoroastrians to scholars who believe that zoroastrianism was the state religion of the achaemenid empire (for this last view, see recently kreyenbroek 2006 for a brief review with references, see. Zoroastrian was a state religion of achaemenid empire, parthian and sassanid empires after the arab invasion, many believers in zoroastrianism fled to india and became known as the parsi (parsee.
Zoroastrianism was made the state religion of the empire, and conversions were actively made to counteract the proselytizing zeal of christians this missionary activity shows that zoroastrianism was really a universal religion and not an ethnic religion, limited to one people. In his paper, zoroastrianism in northern shirvan, farroukh jorat notes that in gakh/qax district (in which ilisu is located), there is a mountain named armaiti (armatian), on top of which are the remains of a round fire temple dating to the 5-6 cent. Zoroastrianism in azerbaijan goes back to the first millennium bc or earlier and was the predominant religion of greater iran before the conversion to islam the name azerbaijan is persian and means protect(or) of fire,  which is said to have a direct link with zoroastrianism.
Persia, centered around present-day iran, was the site of a vast empire that existed in three general phases the achaemenids (550-330 bce) established the first persian empire under cyrus the great, who quickly expanded the empire's borders. During that time, the achaemenid empire was formed, and it became the first persian empire led by cyrus the great, the persians defeated many kingdoms and empires with places such as babylon, lydia, and egypt conquered, zoroastrianism quickly spread throughout the empire, becoming the state religion of the persians. No one knows for certain prior to the rise of the achaemenid empire, the two civilizations which originated in iran were the elamites, who were a pre-iranian civilization and the medes who were conquered by the achaemenids median empire and tribes, credit: circle of ancient iranian studies (cais.
Zoroastrianism's holy books are called the avesta, which contains sacred texts initially passed down orally from one generation to the next before they were converted into writing the books have 17 chapters known as gathas zoroastrian hymns attributed to the prophet himself. I feel ancient iranians, with zoroastrianism faith, were more serious and had a moral society according to the teaching of zoroaster, people were responsible for their behaviours. Zoroastrianism was the favored religion of the two great dynasties of ancient persia, the achaemenids and sassanids however, because we have virtually no contemporary persian written sources from these periods, it is difficult to describe the nature of ancient zoroastrianism in much detail.