Who is gandhi? what was the salt march?

The Salt March, also called Dandi March or Salt Satyagraha, major nonviolent protest action in India led by Mohandas (Mahatma) Gandhi in March–April 1930.

Gandhi was the preeminent leader of the Indian independence movement in British-ruled India.

Is there a passage that comes with this question or should i know this right off the bat, because if it is, i probably have short term memory loss or college is too stressful