Persia perhaps. Literature is about anything the author decides to write about
Probably at any university that has a department of Middle Eastern Studies, and these are legion, at least in the United States. Both Harvard and the University of Chicago has one and these are...
Roman writers turned to the Greeks for inspiration in writing poetry, plays, and tall tales.
There is no difference, except that one is capitalized in the beginning, in the way you wrote it.
It doesn't destroy literature.