Respuesta :

- Growth and increasing roles of middle class
- The increasing demand for skilled workers.

The second industrial revolution shifted the main economic sector from agriculture into manufacturing, which require a lot of skilled workers to operate.
This allow people to produce higher quantity with lesser time and expense and many middle-class people see this as an opportunity to grow their business

The correct answer for greatest social change of the Second Industrial Revolution is "growth of middle class".

Q&A Education