With the Forty-second Amendment of the Constitution of India enacted in 1976, the Preamble to the Constitution asserted that India is a secular nation.

Who added secularism in Indian Constitution?

Prime Minister Indira Gandhi, whose Indian National Congress government enacted the 42nd Amendment in 1976, during the Emergency.

Who introduced secularism?

The first to use the already-extant word "secularism" in a modern sense, was the British agnostic writer George Holyoake, in 1851.