Answer:
#7 is self-designation by Indo-Iranian peoples in ancient times
Explanation:
He was an author so he contributed by writing books to acknowledge the age of enlightment of literature and... other things!
That's Rationalization my friend.
Hope this helps :D
King Darius died, his son Xerxes took over, 300 spartans died (including King Leonidas), Persia was defeated by the Greek.