Iran country was formed about 2500 year ago with the hands of great Koorosh (Cyrus), he reunited all the arian tribes who setteled in the today geoghraphical IRAN FLAT and the other cilvilizations of that time.

as he write on the Parse (Persepolise) south wall scripture he could unite these arians and lands at that time, the majors are:

1 'ilAm: The south of today Iraq country, the arabic Iraq
2 mAd: kordestan(Kurdistan) , arAn(today Azirbayjan republic), gilAn (the southshores of caspian sea and tAlesh land)
3 arabestAn: today Saudi Arabia
4 mesr: today Egypt
5 armanestAn: today Armenia
6 kApAdookieh and sArd: today Greece and Italy and Germany
7 pArt: KhorAsAn of Iran
8 zarang: sistAn of Iran and the today Pakistan
9 AriAnA: today Afghanistan and Kashmir
10 soqd: today Turkmanistan

As you can imagine the most great and the most powerful empire of the world.

As you know the arians (White race) ancient country before the long journy to India and Europe and Iran called "a ye rA na va 'e ja" and then they reached this flat (About 7029 years ago) they called this country "ayerAn" or IRAN again.

as you ould see this country that u call Iran today is the most pure Arian land of the world and it's the most important base of the white race!

more refrences:
Iran ancient maps
The HakhAmaneshiAn (Achaemenid) Empire - Brief
The HakhAmaneshiAn (Achaemenid) Empire - History
The HakhAmaneshiAn (Achaemenid) Empire - image
The Great Koorosh (cyrus) - Brief