text: Begun in 1462 by Mehmet the Conqueror , it was enlarged and extended by each succeeding sultan until it became a miniature city , which included mosques , libraries , stables , kit ? Σhens , schools , the imperial mint , treasuries , barracks , armouries , government offices , and audience halls .
  
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  It was expanded by every sultan who ruled after Mehmet the Conqueror .