So there's different accounts that Cyrus the Great might have been born in 575 BCE, he might have been born closer to 600 BCE, and so that's why I have these dotted lines. Similarly, we don't know exactly when Cambyses II was born, but we do know that he took control in 530 BCE, and so that's why you see Cambyses, you see this line right over here turn blue. And actually Cambyses ends up dying in 522, so let me actually, this should be like that, there you go. He ends up dying in 522, but before he dies in 522, he is able to conquer Egypt in 525 BCE, so right around there. And you can imagine that while he's conquering Egypt, and let me keep drawing this family tree, so now we have Cambyses, Cambyses, Cambyses II, he goes off, makes his real goal to conquer Egypt, and that's a big deal. Remember, this is ending thousands of years of the rule by the native pharaohs. They start, these now foreign rulers start calling themselves the pharaohs of Egypt as well, but they get put in to, Egypt becomes part of the Persian Empire because of Cambyses.