Explanation

The Non-Cooperation Movement started in 1920.

The leader of the Non-cooperation Movement was Mahatma Gandhia and Muhammad Ali Jinnah

The non-cooperation movement was a mass movement that involved participation from the nationalists as well as the public. 

After a series of events including the Jallianwala Bagh Massacre in 1920.

The Non-cooperation Movement was called off by Mahatma Gandhi after the Chauri Chaura incident in February 1922.