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 united campaign.
The abolition of ‘Salt Tax’ was most stirring demand because salt was the most important item in food that is consumed by both rich and poor.