The disadvantages are clear. The employer who employs many is always subject to the strictest market and capital standards. So the wage requirements strain the employer and the workers are strained by undrrpayment. He pretty much blames it on the capital. Humans lose homogeneity. However he also adds that he owe this law "wonderful material development" and D that it ensures the survival of the fittest in every department so it's best for the human race.
Bibles and information could be massed produced and distributed to the people slowing the rebirth of knowledge and science Hope this helped and good luck
It decreased due to the fact that many jobs were opening in the urban areas so people left their farms and houses in rural areas to get a job in a bigger city.