1.Jallianwala bagh hatyakand:- Jallianwala Bagh, Amritsar, is a large open space enclosed on three sides by buildings with only one exit. The wholesale slaughter at Jallianwala Bagh horrified the whole country. Thousands died and many more were injured.Jallianwala Bagh massacre or Amritsar massacre was a very bad incident for the people in Amritsar which is still remembered by the people of India by the memorial built in the Amritsar city of the Punjab state. The memorial was first established in the year 1951 in order to remember and pay tribute to the people who had sacrificed their lives in the massacre done by the forces of the British rule over the peaceful Indian people who were involved in celebrating the most famous occasion of the Punjabi culture called Punjabi New Year on 13 th of April in 1919 at the Jallianwala Bagh, Amritsar. 2.Simon commission:- Simon Commission, group appointed in November 1927 by the British Conservative government under Stanley Baldwin to report on the working of the Indian constitution established by the Government of India Act of 1919. 3.Dandi march:- On 12 March 1930, Gandhi and 80 satyagrahis many of them were scheduled castes, set out on foot for the coastal village of Dandi, Gujarat, over 390 kilometres (240 mi) from their starting point at Sabarmati Ashram.it is also known as tha salt march. thanks........... .