Development of permanent settlements, they were hunters and gatherers before which made them travel often
The term 'invisible hand' was first used by Adam Smith in the 18th century to describe the efficiency in the autoregulation of free markets, where free means not externaly intervened by governments. Intervention distorts markets and harms the efficiency of their functioning.
The main principle behind is that, when individuals pursue their "private" efforts they are generating larger wealth for society as a whole than if their first intention was to help society. The markets will be in charge of channelizing individuals interests into socialy desirable outcomes.
Answer:
The more power the empire inherits, they often become blind sighted when it comes to making the right decisions. The higher up in the ranks, the more privilege you receive, the lower in the ranks you are, you often receive neglect. The oblivious leaders are eventually overthrown by their people, or often times citizens created fights among each other.
Is This a question or do you want people to look into it ? I’m not sure what you’re asking