<span>19th <em>Century</em> rags-to-riches tales often experience <em>life</em> in <em>boarding houses</em> ...</span>
The United States, Great Britain, France and Japan.
It rapidly increased due to an increase in immigration
The Industrial Revolution is generally considered to have ended in the early 1800's. ... We are currently in the digital revolution, which many say started in the 80's (although a case could be made for before).