Many people think of Persia as synonymous with Islam, though Islam only became the dominant religion in the Persian Empire after the Arab conquests of the seventh century. The first Persian Empire was shaped by a different religion: Zoroastrianism.
Zoroastrianism is an ancient Persian religion that may have originated as early as 4,000 years ago. Arguably the world’s first monotheistic faith, it’s one of the oldest religions still in existence. Zoroastrianism was the state religion of three Persian dynasties, until the Muslim conquest of Persia in the seventh century A.D. Zoroastrian refugees, called Parsis, escaped Muslim persecution in Iran by emigrating to India. Zoroastrianism now has an estimated 100,000 to 200,000 worshipers worldwide, and is practiced today as a minority religion in parts of Iran and India.
