What was the political structure of pre-Archaemenid and pre-Median Iranian Plateau?
Did it consist of city states like in early Sumer and Assyria, nomadic tribes, or was it inhabitated by highly-urbanized though disorganized tribes like in Levant?
Can you clarify? Do you mean before the establishment of the Achaemenid Empire or before the Medes and Persians migrated into West Iran in the first place?