When was India colonised by India? When did India gain back independence?

India was colonized in 1947.

On June 15, 1947, the British House of Commons passed the Indian Independence Act, or Mountbatten Plan, which divided India into two dominions, India and Pakistan.

On August 15, 1947, the Indian Independence Bill took effect, inaugurating a period of religious turmoil in India and Pakistan that would result in the deaths of hundreds of thousands, including Gandhi, who was assassinated by a Hindu fanatic in January 1948 during a prayer vigil to an area of Muslim-Hindu violence.