The Non-Cooperation Movement was a significant political campaign launched in 1920 by Mahatma Gandhi and the Indian National Congress aimed at resisting British rule in India through nonviolent means. This movement called for Indians to withdraw from British institutions, including schools, courts, and government services, promoting self-reliance and civil disobedience as a means of achieving independence. It marked a crucial step in the struggle against colonialism, reflecting the rising tide of nationalism and the desire for self-governance in a world where empires were beginning to face challenges.