Question

explain the reasons that led to the need for underground railway in london

Answer 1

Social change  which led to the need of underground railways was mainly industrialization was the major factor responsible for underground railways in london

Answer 2

The northern plains have vast level land. ... ii These plains have high population density as a result of which we find dense railway network these to cater the interest of the people. iii Rich agricultural resources provide a favourable condition for the growth of railway network in the northern plains.