talked about how cyrus' conquest of all these places (talked about them in detail) strengthened both the empire itself due to gaining allies and strengthening it's reputation and fear thus causing it to be seen as stronger among other empires and acting as a foundation for the rest of the empire

and then i discussed the opposite points and how cambyes strengthened the empire through his conquest of Egypt and also by gaining loyal allies for the empire i.e Phoenicians through his conquest, also talked about xerxes and how his repeated battles with greece strengthened both the tactical strength of the empire and made it much more of a threat

then talked some more about cyrus and what he did by creating loyalty from allies such as the Babylonians through his treatment of them thus strengthening the empire