|
|
|
|
|
by alf-pogz
2907 days ago
|
|
Yes, but civilizations and empires are not representative of the progress of humanity as a whole. Besides, isn't Dark Ages a rejected term by historians now? In addition, what is 200-400 years in the history of civilization? Of course there will be volatility - just like life on an individual level, the stock market, annual crop yields, etc. |
|