Explanation:

Amritsar

• Jallianwala Bagh Massacre, also called Massacre of Amritsar was an incident on April 13, 1919.
• In which British troops fired on a large crowd of unarmed Indians in an open space known as the Jallianwala Bagh in Amritsar in Punjab.
• The Jallianwala Bagh site in Amritsar is now a national monument.