Secondary schooling was primary installed as a way for students to be exposed to deeper understanding on the lessons that have been taken during their primary education. It was also designed so that students will be able to determine for themselves which skills they are good at and which skills they can improve.
B - More people migrated from rural farmlands to cities in order to find more work
Vertical integration is a form of business organization in which a company controls the supply chain from acquisition of raw materials, to manufacturing, to end sales. In history, vertical integration was a form of industrial organization. One common effect of vertical integration was that it made supplies more reliable and thus, improved efficiency. It took over and controlled the quality of the product at all stages of production
I think it’s 2
explanation: