The Answers is:
Probably the most important single cause of Byzantine empire collapse was its recurrent debilitating civil war. Three of the worst periods of civil war and internal infighting took place during Byzantine empire decline
I think he is reminding the American people that our
ancestors fought hard to establish this country. He tells that we should proud of who we are
and where we come from and we should always defend the ideals of democracy both
here and abroad.
Political conflict.........
