When was the railways introduced in India?

NCERT (Pre-rationalised): “2.2 Trends of change … The introduction of railways in 1853 meant a change in the fortunes of towns. Economic activity gradually shifted away from traditional towns which were located along old routes and rivers. Every railway station became a collection depot for raw materials and a distribution point for imported goods. For instance, Mirzapur on the Ganges, which specialised in collecting cotton and cotton goods from the Deccan, declined when a railway link was made to Bombay (see Chapter 10, Figs. 10.18 and 10.19).…”