<prompt> Translate the following text to EnglishUtajiri wake ulifikia kilele wakati wa utawala wa Croesus 560-546 KK, ambaye alishukuru utajiri wake kwa dhahabu iliyopatikana kutoka Mto Pactolus.  <response>: They reached their peak during the reign of Croesus 560 546 b.c. , who owed his fortune to gold panned from the River Pactolus. 