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This revolt was not only against the social system that the British was going to introduce but it was also the against of the capitalist mode of exploitation. Previously, the conquerors who had come to India never tried to exploit the people of India against the then mode of productions.
This is Marxian analysis of the Great revolution of 1857.
After this revolt the British Capitalists changed their their method of exploitation by introducing capitals in India and gradually developed Industry in India. Introduction of railway was just to facilitate the modern system of communication to develope the superstructure within India.