Dear Mr.Historian, i don't know how you can say "If any Persian has a problem to find real Persian culture to market and advertise, then they can start making up their own history from now with something realistic." ?
sorry but it's so ridiculous! Ancient Persia had the greatest power, culture and anything.
Just have a glance at some history books.

Have a look:
http://en.wikipedia.org/wiki/History_of_Iran

;-)