Answer
Captured but spared, Nabonidus, the last king of the Neo-Babylonian Empire, met a relatively benevolent fate after his defeat to Cyrus the Great, the founder of the Achaemenid Empire. Cyrus, known for his magnanimous policies, treated Nabonidus with respect and allowed him to live out his days in exile in Carmania, a province within the Achaemenid Empire.