Gandhi led the Salt March or Dandi March in 1930 to protest Britain's salt tax and monopoly on salt production. He and 70 followers marched 240 miles from Sabarmati to Dandi, where Gandhi broke the salt laws by making salt from seawater. The march sparked widespread civil disobedience across India and led to over 60,000 arrests. It increased momentum for Indian independence, which was finally achieved in 1947 after decades of nonviolent resistance led by Gandhi and the Indian National Congress.