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.
The difference I see is exhibit(n) are items or objects and exhibition is an event in which the items are shown
