<prompt> Translate the following text to EnglishMilki ya kale iliyokuwa ikiendelea kusitawi kuanzia 2500 KK hadi mwanzo wa Ukristo, ilikuwa ni mojawapo ya ustaarabu mkubwa zaidi ambao ulimwengu umewahi kuona.  <response>: The ancient Empire that flourished here from 2500 b.c. until just before the dawn of Christianity was, arguably, the greatest civilization that the world has ever seen. 