The concept of Public Interest Litigation originated in

The question asks about the origin of the concept of Public Interest Litigation (PIL).Public Interest Litigation (PIL) is litigation filed in a court of law for the protection of 'Public Interest'.The concept originated and developed in the United States in the 1960s. American courts allowed broader public access to the legal system to represent the interests of marginalized groups or address issues of public concern like environmental protection or consumer rights.India adopted and significantly expanded the scope of PIL in the late 1970s and early 1980s, largely through judicial activism by the Supreme Court of India (notably Justices V.R. Krishna Iyer and P.N. Bhagwati), but the conceptual origin lies in the United States.