The chronological order of the events is: (iv) The Jallianwala Bagh Tragedy: April 13, 1919 (ii) Formation of Swarajist Party: January 1, 1923 (i) Formation of Naujawan Bharat Sabha: March 1926 (iii) The Dandi March: March 12, 1930 Arranging them chronologically gives (iv) -> (ii) -> (i) -> (iii).