Amritsar (Punjab) — The Jallianwala Bagh incident took place on 13 April 1919 at Amritsar, where General Dyer opened fire on a crowd gathered in the enclosed ground.
Source: The Nationalist Movement in India (1870s–1947), Chapter 2, Section 1.2 – The Rowlatt Act
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For map-based questions, you must identify the correct location (Amritsar) and be ready to mark it on the outline map of India, usually in Punjab (northwestern India). The examiner looks for the correct place name. Mentioning the date (13 April 1919) and General Dyer briefly adds context but is not strictly required for 1 mark.