Respuesta :
Answer:
new and improved technologies
Explanation:
The central trend of the Industrial revolution was to constantly improve and develop new technologies. This was due to the efficiency, lower cost, quickness, and profit that the new and improved technologies were bringing. The human labor force was of course needed, and without it nothing of it would have been possible, which is why more and more people were employed, be it men, women, or children. The manual labor though was limited in its performances, so in order to constantly develop and make more profit, the new technologies was crucial, as combined with the manual labor they were driving the economies rapidly forward.