The development of modern means of transport and communication

(1) The RAILWAYS, introduced in 1853, broke down the isolation of the provinces. People of different regions, castes and religions travelled and mixed together, and leaders could tour the country and address audiences far from home — so the movement became national instead of local. (2) The POSTAL AND TELEGRAPH SYSTEMS allowed nationalist leaders to correspond quickly across great distances and to organise sessions, campaigns and protests on an all-India scale; newspapers could carry the same news to every province within a day. (3) They also carried nationalism unintentionally. The British built them to move troops, raw materials and manufactures for their own benefit, but the same railways carried nationalist leaders and newspapers, and Indians saw plainly that the network served British commerce first — which itself became a grievance.

One mark per point. The three angles are physical unity, speed of communication, and the unintended consequence. The third is what lifts the answer above a list: the British built this infrastructure for their own purposes, and it helped create the very movement that ended their rule — the same irony as Western education in part (a). The date 1853 for the first railway is worth giving.