DENDROLOGY

Detailed explanation-1: -The railway network started expanding rapidly during the second half of the 19th century. By 1890, the length of the railway track was about 25, 500 km. It touched the figure of 7, 65, 000 km in 1946. Was this answer helpful?

Detailed explanation-2: -The trees that were cut were used as sleepers to hold railway tracks together and as fuel to run locomotives. Additionally, the government granted contracts to local contractors for supplying timber for sleepers. This also led to indiscriminate tree-felling.

Detailed explanation-3: -By 1947, the year of India’s independence, there were forty-two rail systems. In 1951 the systems were nationalised as one unit, becoming one of the largest networks in the world. Indian Railways operates both long distance and suburban rail systems.