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Q.

[[1]] were essential for colonial trade and for the movement of imperial troops.


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Detailed Solution

Railways were essential for colonial trade and for the movement of imperial troops. The railway network quickly grew to start in the 1860s. About 25,500 km of track had been built by 1890. The railroads' total length reached more than 765,000 kilometres in 1946. Wood was required for sleeper trains and to keep the rails attached. 2000 and 1760 sleepers are needed for every mile of the railway. In the 1860s, the rail network expanded steadily. Along the railroad tracks, a tremendous amount of trees have been felled. Under the Madras Presidency, 35,000 trees were felled annually in the 1850s.
 
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