Any three Economic causes for the Revolt of 1857.

(1) The DRAIN OF WEALTH — India’s resources were exploited for Britain’s benefit; revenue raised in India paid for British wars and administration, and wealth flowed out with nothing given in return. (2) The DESTRUCTION OF INDIAN INDUSTRY — heavy duties on Indian goods entering England, while British machine-made goods entered India almost free, ruined the handicrafts and textile industry and threw thousands of artisans and weavers out of work. (3) HEAVY LAND REVENUE and its harsh collection — revenue was demanded in cash on fixed dates regardless of the harvest, driving peasants into debt and off their land; the resumption of rent-free lands ruined many landholders, and the annexation of states threw nobles, soldiers and court artisans into unemployment.

One mark per cause. Give each a heading so the three are visibly distinct. The organising idea to state in one line: British policy turned India from an exporter of manufactures into a supplier of raw materials and a market for British goods — every grievance here follows from that. The unemployment point is what links economics to the Revolt itself, since the displaced nobility and soldiery supplied much of its leadership.