It is no simple achievement. Look at some of the other close contenders..
'Egypt'- There is nothing Pharaonic about it. It is a Greek name.
Assyrian people of the middle east- I don't see them on a map!
'Kandahar and Sindh'- Named after a king and a river, nothing tribal there..

— Joseph T Noony (@JoeAgneya) January 14, 2018