Question (so many posts from me, I know). If this was an empire largely like the Roman Empire (which is an assumption I've made) were there any invaders/barbarian like people that invaded to help bring about the collapse? And were there any regions that never were a part of the empire? Because empires tend not to be self sufficient so I imagine they'd be trading with other nations. I think that would play an important part of how I want to create my nation.