The World ‘s Largest Empire

  The reign of Cyrus lasted about thirty years; his empire took root with his conquest of the Median Empire followed by the Lydian Empire and eventually the Neo-Babylonian Empire. He also led an expedition into Central Asia, which resulted in major campaigns that were described as having brought "into subjection every nation without exception". Cyrus did not venture into Egypt and was alleged to have died in battle while fighting the Massagetae along the Syr Darya in December 530 BC. However, Xenophon claimed that Cyrus did not die in battle and returned to the Achaemenid ceremonial capital of Persepolis again. He was succeeded by his son, Cambyses II, who managed to conquer Egypt, Nubia, and Cyrenaica during his short rule.