Task: Sentence Expansion
Input (English): It is a united church established on 29 November 1970 by bringing together the main Protestant churches working in northern India ; it is a province of the worldwide Anglican Communion .
Output (English): The Church of North India ( CNI ) , the dominant United denomination in northern India , is a united church established on 29 November 1970 by bringing together the Anglican and Protestant churches working in northern India ; it is a province of the worldwide Anglican Communion .