Which of the following statements correctly explains the impact of Industrial Revolution on India during the first half of the nineteenth century?

Option A is correct. In the first half of the nineteenth century, cheap machine-made British cloth flooded Indian markets, and Indian handicraft producers, especially weavers in Bengal, Dhaka and Murshidabad, lost their markets. Dhaka's population is reported to have fallen sharply during this period, and this is the basis of the deindustrialisation debate that Mains answers often cite.

Why the others fail:

• B is wrong because mechanised textile mills came to India only after the 1850s, starting with Bombay in 1854. Before that, the British mostly used Indian artisans for raw materials and sent the cloth to Britain.
• C is wrong on timing. The first railway line opened in 1853 (Bombay to Thane), so railways belong to the post-1850 phase, not the first half.
• D is wrong. British goods entered India at low duties, reflecting free-trade pressure, and the colonial state did not protect Indian industry this way. Protective tariffs came much later.

Concept: colonial deindustrialisation, linking industrial Britain with the decline of Indian craft economies. Mains connection: GS-I modern history and GS-III economy.

Trap: students pick B or C because they associate the Industrial Revolution with machines and railways. Check the date first, since the question asks about the first half of the century.