Analyze identify gandhi central claim in his letter. what key reasons does he provide to support his claim

He did not have long to wait. On March 12, having given the Viceroy an extra day, Gandhi and seventy-eight others left his ashram and began to walk the two hundred miles to the seacoast. There, he declared, he would take a pinch of salt from the Indian Ocean, thus violating the laws of the Empire, which declared that only the British could harvest salt.