The 1977 Congress of St. Louis was an international gathering of nearly 2,000 Anglicans, united in their rejection of theological changes introduced by the Episcopal Church in the United States of America in the General Convention of 1976 and, ultimately, by the 1979 revision of the Book of Common Prayer. Anglicans who attended this congress felt that these changes amounted to foundational changes in the Episcopal Church and meant that it had "departed from Christ's One, Holy, Catholic and Apostolic Church."The Congress of St. Louis produced the Affirmation of St. Louis and authorized the formation of the Anglican Church in North America. Despite the plans for a united church, the result was division into several Continuing Anglican churches: the Anglican Catholic Church, the Anglican Province of Christ the King and the Anglican Catholic Church of Canada.These continuing churches are described by the Affirmation of St.