true the current page is way to unsourced thus opening the door for disucssion such as the italy one above i have added some sources for three current great power and will try and add further refs for the current great power unfortunately i am not a historian for asian history so i do not really know whether or not all these dynasties were great powers i think your right thought it is an induatrial age term purging unreferenced info is probably our only and best option regards