Which ancient world empire cared more for its citizens, Egypt, Assyria, Babylon, Persia or Rome?
The mighty Medo Persian World Empire, 539-331 BC.
Read all about it here
Thomas Faraday in the science fiction novel, The hunt for Komodo Cracker is sent back in time to the Persian Empire of 473 BC. Getting there was easy, coming back home to the twenty-first century however, is not so easy.