Explain the Non-cooperation Movement-

The non-cooperation movement was a political campaign launched on 4 September 1920, by Mahatma Gandhi to have Indians revoke their cooperation from the British government, with the aim of inducing the British to grant self-governance and full independence (Purna Swaraj) to India.Non-cooperation movement was a mass movement which involved participation from the nationalists as well as the public. Factors that led to formation of this movement was the oppressive policies of Britishers such as the Rowlatt Act and the Jallianwala Bagh incident in Amritsar.

From mexican american war , us gained new mexico.