Positive: the laying of the world’s third largest railroad network was a major British achievement. When completed, the railroads enabled India to develop a modern economy and brought unity to the connected regions. Along with the railroads, a modern road network, telephone and telegraph lines, dams, bridges, and irrigation canals enabled India to modernize. Sanitation and public health improved. Schools and colleges were founded, and literacy increased. Also, British troops cleared central India of bandits and put an end to local warfare among competing local rulers.