History of the Persian Empire, is a book by A. T. Olmstead. This is a book about Iranian history from Ancient period until the end of the Achaemenid period. A part of History of the PERSIAN EMPIRE book When Cyrus entered Babylon in 539 B.C. the world was old. More significant, the world knew its antiquity. Its scholars had compiled long dynastic lists, and simple addition appeared to prove that kings whose ...