On 31st March 1930, Mahatma Gandhi sent a letter to Viceroy Irwin. Mahatma Gandhi had stated eleven demands in this letter out of which some were of general interest and some were specific demands of different classes. The demands were wide ranging in order to bring together everyone under a unitedcampaign. The most important demand was to abolish the salt tax as it was the most important item in food that is consumed by both rich and poor.
Mahatma Gandhi started the march for over 240 miles with his 78 trusted volunteers from Sabarmati to Dandi. They walked for 10 miles a day for 24 days. He violated the salt law by manufacturing salt by boiling the sea water on 6th April 1930. Now Gandhiji wanted Indians to refuse all sort of cooperation with the British and also break the colonial rules. There after, people broke salt law, manufactured salt, showed demonstrations, boycotted the foreign clothes, picketed the liquor shops, peasants refused to pay the taxes and revenues and the forest people violated the forest laws.