lejustemilieu wrote:But there were no poor people before the birth of high energies, such as coal, steam, etc.
In short, before the birth of the industry, there was only a simple and sufficient life.
No poor?
Where are you kidding? We all were!
In the Middle Ages, 99% of humanity had a life of misery and toil! The 1% were the nobles by divine right ... and rare traders who managed to do well!
A poor man in our society has access to better comfort than a noble from the Middle Ages ... provided he has a roof!