Zoroastrianism

Zoroastrianism /ˌzɒroʊˈæstriənɪzəm/, also called Mazdaism and Magianism, is a religion and philosophy based on the teachings of the prophet Zoroaster (also known as Zarathustra in Avestan) and was formerly among the world's largest religions. It was probably founded some time before the 6th century BCE in the eastern part of ancient Greater Iran.