<prompt> Translate the following text to EnglishMji huo ulikuwa mji wa kwanza wa Byzantium, ulianzishwa karne ya saba KK, na ulikuwa kituo cha Constantinople, mji mkuu wa Milki ya Byzantium.  <response>: This was the site of the original Byzantium, founded in the seventh century b.c. , and of the civic centre of Constantinople, capital of the Byzantine Empire. 