Zoroastrianism is a dualistic religion founded by Zoroaster (or Zarathustra) in what is now Iran. It describes life as a struggle between good and evil with the expectation that good will ultimately prevail. The central divine being is called Ahura Mazda and was associated by Zoroaster to the idea of a creator of all, who had not been created himself. In the belief system, the dead would be resurrected at "the end of time". The sacred text is called Zend Avesta.
Zoroastrianism was created by Zoroaster. The exact date isn't known with some schools of thoughts believing around 1200 B.C., but others around 600 B.C. The religion was popular amongst the tribes of Persia, though was popularized when it was made the state religion of the Sassanid Empire. It quickly declined when the forces of Islam overran the Persian Empire and the population became Islamic. In the 21st century, Zoroastrianism is practiced by around 150,000 - 200,000 people worldwide (in India, Pakistan, Afghanistan and Iran).
Black, Matthew & H. H. Rowley, eds. (1982), Peake's Commentary on the Bible, New York
Boyce, Mary (1979), Zoroastrians: Their Religious Beliefs and Practices, London: Routledge
Clark, Peter (1998), Zoroastrianism. An Introduction to an Ancient "Faith", Brighton, UK