Solution:The correct chronological arrangement of events is 2-1-3-4. The Champaran Satyagraha of 1917 was the first Satyagraha Movement led by Gandhi in India and is considered a historically important revolt in the Indian Independence Movement.Ahmedabad Mill Strike of 1918 is considered the first hunger strike led by Gandhi. In 1918, Mahatma Gandhi intervened in a dispute between Ahmedabad workers and mill owners. To fight against the Rowlatt Act, Mahatma Gandhi formed the Satyagraha Sabha on 24th February, 1919 at Bombay.
The Jallianwala Bagh massacre, took place on 13th April, 1919. The British Army opened fire upon the unarmed peasants, women, children and elderly who were gathered in Jallianwala Bagh and killed hundreds of them.