Now, it wasn't the first empire in that region. Before the Persian Empire gets established or what we associate with the Persian or the Achaemenid Empire of Cyrus the Great, much of this region of where we call modern day Iran was controlled by the Medians and you can see Media is this region right over here and it was Cyrus the Great that in 549, some accounts say 550 BCE, is able to overthrow the Median emperor who happens to be his grandfather and that is the real dawn of the Achaemenid Dynasty. Now, the next question, and this was established, let me write this down, this is established by Cyrus the Great. Cyrus the Great. He was Cyrus the Second, but he became Cyrus the Great because he's able to break out and overthrow the Medians and establish this massive empire and the reason why it's called the Achaemenid Empire, not the Cyrid Empire, is that Cyrus claims to be from the family of the patriarch Achaemenes and a lot of these names, these are from Greek accounts and so that's why they sound a little bit more Greek, but Achaemenes is a semi-legendary figure that we're not sure exactly when he lived, but the best accounts I could see is near the beginning of the 7th century BCE and Cyrus the Great is from Achaemenes' family and so since they came to power, this first really Persian Empire, when the people talk about the Persian Empire, they don't tend to refer to the Median Empire, they're really referring to the Achaemenid Empire. That's why it's called Achaemenid. Now in future videos, we'll talk more about what happened in the Achaemenid Empire, but you can see the extent of it was pretty significant and it lasts for a little over 200 years until they are conquered by foreigners and the foreigners that conquer them are the Greeks.