The following points may help you:

a.The salt tax levied by the government revealed the most oppressive side of the colonial rule.

b. Salt was consumed by rich and poor alike and was one of the most essential food items for all.

c. Salt was seen by Mahatma Gandhi as a powerful symbol that could unite masses and can be used as a weapon of the people against the oppressive colonial regime.

d.Mahatma Gandhi believed in the ideals of Non -violence,Swaraj, Swadeshi and Boycott and in the direct action and participation of the people. To wage a struggle against the oppressive British policies and laws, Mahatma Gandhi sent a letter to Viceroy Irwin stating eleven demands on 31st January 1930,These demands represented the general interests and which all the classes identified with.The most important demand was to abolish salt tax.

e.The colonial government did not pay any heed to any of Mahatma Gandhi's demands. Thus, Gandhi chose to break the salt law peacefully and show resistance to the British rule. This instigated the Civil disobedience movement and the salt march to Dandi