List the following Iranic empires in chronological order:

The chronological order of the Iranian empires is Median, Achaemenid, Parthian, and Sassanid. The Median Empire was the first major Iranian empire, which emerged around 625 BCE and lasted until approximately 550 BCE. It was succeeded by the Achaemenid Empire, which was founded by Cyrus the Great and extended from the Mediterranean to the Indus River. The Achaemenid Empire was overthrown by Alexander the Great in 330 BCE, leading to the rise of the Parthian Empire. The Parthians were known for their military prowess and were able to withstand Roman invasions. Finally, the Sassanid Empire emerged in the 3rd century CE, which restored Iranian rule and expanded its influence across the region until it was eventually conquered by the Arab Muslim armies in the 7th century CE. Thus, Median, Achaemenid, Parthian, and Sassanid represent the chronological succession of major Iranian empires.