I had some thoughts last night or this morning that I think are intriguing.
What was life like in the Roman Empire for the common man?
Now, in Italy, Greece, and northern Egypt I have the impression life was amazingly civilized. Life for a middle class person in Republic or Imperial Rome probably wasn't equaled until the 19th or even 20th century from my loose impressions. What percent of the population (even in wealthy urban centers) constituted "middle class" is another question. It must be pointed out that much of the wealth of Rome was based on a horrible system of slave labor. Every wealthy Roman home had catacombs below where the slaves slept. The biggest fact that gives me an impression of such a high standard of living is the fact Rome had a working sewage system, and it wasn't until the 19th century the European cities had any. Like in Monty Python and the Holy Grail
"He must be a king."
"What makes you say that?"
"Well, he hasn't got ***** all over him."
or as one 19th century English parliamentarian put it (I don't remember the exact quote)
"It began to dawn on the upper classes of England, that most of the nation's people were
living in *****."
But I haven't got to my main point yet. I have the impression that the vast majority of the Roman Empire was very much like "flyover country" in the United States today, only more so. I don't think that most Roman peasants had a standard of living much past neolithic standards, and I think commerce and wealth in the provinces were very sparse compared to Rome.
The dark ages had the bright side of decentralizing power so much that many independent commercial centers were able to develop in Europe. This is why Europe was able to develop into the dominant continent in the 19th century, whilst more developed civilizations (China) were stifled by centralized, self interested bureacracy.
I am wondering, about what century did life for a majority of people in Europe become as good as it was during the Pax Romana? I know it's hard to answer such an open ended question.