Question

nowadays why are the roads made up of concrete answer the following

Answer 1

The concrete slab ranges in thickness from 6 to 14 inches. It is laid by a paving machine, often on a supporting layer that prevents the pressure caused by traffic from pumping water and natural formation material to the surface through joints and cracks.

Answer 2

because if it will be not made up of concerte then the roads will start cracking everywhere concrete keeps it harder and will be comfortable