Explanation:

Salt March, also called Dandi March or Salt Satyagraha, major nonviolent protest action in India led by Mohandas (Mahatma) Gandhi in March–April 1930. The march was the first act in an even-larger campaign of civil disobedience (satyagraha) Gandhi waged against British rule in India that extended into early 1931 and garnered Gandhi widespread support among the Indian populace and considerable worldwide attention.
Salt production and distribution in India had long been a lucrative monopoly of the British. Through a series of laws, the Indian populace was prohibited from producing or selling salt independently, and instead Indians were required to buy expensive, heavily taxed salt that often was imported. This affected the great majority of Indians, who were poor and could not afford to buy it. Indian protests against the salt tax began in the 19th century and remained a major contentious issue throughout the period of British rule of the subcontinent.
In early 1930 Gandhi decided to mount a highly visible demonstration against the increasingly repressive salt tax by marching through what is now the western Indian state of Gujarat from his ashram (religious retreat) at Sabermati (near Ahmadabad) to the town of Dandi (near Surat) on the Arabian Sea coast. He set out on foot on March 12, accompanied by several dozen followers. After each day’s march the group stopped in a different village along the route, where increasingly larger crowds would gather to hear Gandhi rail against the unfairness of the tax on poor people. Hundreds more would join the core group of followers as they made their way to the sea until on April 5 the entourage reached Dandi after a journey of some 240 miles (385 km). On the morning of April 6, Gandhi and his followers picked up handfuls of salt along the shore, thus technically “producing” salt and breaking the law.
day, and Gandhi continued his satyagraha against the salt tax for the next two months, exhorting other Indians to break the salt laws by committing acts of civil disobedience. Thousands were arrested and imprisoned, including Jawaharlal Nehru in April and Gandhi himself in early May after he informed Lord Irwin (the viceroy of India) of his intention to march on the nearby Dharasana saltworks. News of Gandhi’s detention spurred tens of thousands more to join the satyagraha. The march on the saltworks went ahead as planned on May 21, led by the poet Sarojini Naidu, and many of the some 2,500 peaceful marchers were attacked and beaten by police. By the end of the year, some 60,000 people were in jail.