Anglicanism, also known as Episcopalianism, is a Western Christian tradition which developed from the practices, liturgy, and identity of the Church of England following the English Reformation, in the context of the Protestant Reformation in Europe. It is one of the largest branches of Christianity, with around 110 million adherents worldwide as of 2001, most of whom are members of national or regional ecclesiastical provinces of the international Anglican Communion, which forms one of the largest Christian communions in the world, and the world's largest Protestant communion. When united churches with Anglican heritage were not counted, there were an estimated 97.4 million Anglicans worldwide in 2020.