Question

What aspect of Zoroastrianism is the most significant with respect to world history?
a. It became one of the many foreign religions that found a home in India
b. It sustained the Persian empire and served as a justification for their rule
c. Parts of its tenets were adopted by monotheistic religions
d. Zoroastrianism is the founding faith of Judaism, Christianity, and Islam

Answer 1

The aspect of Zoroastrianism that is perhaps the most significant with respect to world history would be that "c. Parts of its tenets were adopted by monotheistic religions," since these went on to be the major Abrahamic religions.