The Guptas recognized that the Earth is round, and it spins on an axis. (which are all correct to this day) Aryabhatta, an astronomer, famously supported his theory that the earth is round and not flat.
The Persian ruler Darius l promoted the religion Zoroastrianism.
I think it's D. or C
Hope this Helps
Answer:
It was a civil war greater than any ever known before or since. ( B.)
