Cyrus is the founder of the Achaemenid dynasty. He was the grandson of the daughter of Astiac (Ishtvigo), the last king of Madad. Originally, Cyrus managed to overcome the Median government and take the Median kingdom from his grandfather.
After these Lydia governments, Babylon and Egypt decided to unite against him. Cyrus attacked them before they did anything. He first fought with Karzis the King of Lydia, and conquered the city of Sardis, the capital of Lydia, and in 546 BC he obtained all the wealth of Lydia. Then, for some time, he strengthened his power in the eastern part of the Iranian plateau, so that he would not be attacked by the Sikhs.
In 538 BC, Cyrus invaded Mesopotamia and conquered Babylon, and thus the Syrian and Palestinian state governments came under his command. He released the Jewish prisoners captured by the Babylonians. Eventually, in 529 BC, on the east of Iran's plateau, it was probably killed in a war between the Caspian Sea and the Aral Sea.