(a) The Rowlatt Act was passed in 1919, also known as the Black Act.The Jallianwala Bagh massacre took place on 13th April 1919 in Amritsar, Punjab. The 34th annual session of the Indian National Congress was held in Amritsar in December 1919, highlighting the Jallianwala Bagh incident. The demise of B.G. Tilak took place on1st August 1920.