It was started by Gandhiji in March 1930 in accordance with the decision taken at the Lahore Session of the Congress. The movement started with with Dandi March on March 12, 1930.
(a) Causes:
1) The Simon Commission: It was an all -British Commission appointed in November 1927 to investigate the need for further constitutional reforms in India. The absence of Indians in the commission was seen as an insult to the self-respect of the Indians and they decided to boycott the Commission at every stage and in every form.
2) Demand for Poorna Swaraj: The British government did not accept the Nehru Report and the Congress passed the Poorna Swaraj resolution at its Lahore session in 1929. The resolution declared Poorna Swaraj to be the objective of the Congress. It was in this session of the Congress that it was decided to prepare for Civil Disobedience.
b) The Programme Of The Movement:
1) Defiance of salt laws,
2) Boycott of liquor,
3) Boycott of foreign cloth and British goods of all kinds,
4) Non-payment of taxes and revenues.
c) Civil Disobedience Movement was different from the Non-Cooperation Movement. The former involved non-payment of taxes and land revenue as well as violation of laws of different kinds in addition to Non-Cooperation activities. Non-Cooperation Movement sought to (1921-1922) sought to bring the working of the government to a standstill by not cooperating with the administration whereas the Civil Disobedience Movement was an attempt at paralysing the administration by breaking some specific rules and regulations. Civil Disobedience Movement was started in 1930 and it ended in 1934.