Life In Iran

• Early history (3200 BC – 625 BC)
Elam was part of the early urbanization during the Chalcolithic. The emergence of written records from around 3000 BC also parallels Mesopotamian history. In the Old Elamite period (Middle Bronze Age), from around 2800 BC, Elam consisted of kingdoms on the Iranian plateau, centered in Anshan, and from the mid-2nd millennium BC, it was centered in Susa in the Khuzestan lowlands. Elamite kingdom continued its existence until the emergence of Median and Achaemenid Empires.
Proto-Iranians first emerged following the separation of Indo-Iranians, and are traced to the Andronovo culture. Proto-Iranian tribes arrived in the Iranian plateau in the third and second millennium BC, probably in more than one wave of emigration, and settled as nomads.
Further separation of Proto-Iranians into "Eastern" and "Western" groups occurred due to migration. By the first millennium BC, Medes, Persians, Bactrians and Parthians populated the western part, while Cimmerians, Sarmatians and Alans populated the steppes north of the Black Sea.