part of the 1648 Cambridge Platform, a statement produced by ministers of colonial Massachusetts and the surrounding region, and again in colonial Connecticut as part of the 1708 Saybrook Platform. The Confession was modified for American Baptists in the 1707 Philadelphia Confession. The Adopting Act of 1729 required American Presbyterians to agree to the theology of the Assembly's Confession, and the Confession remains a part of the Presbyterian Church (USA)'s Book of Confessions. The Confession has been called "by far the most influential doctrinal symbol in American Protestant history" by the historian of religion Sydney E. Ahlstrom. Notes References Bibliography Further reading External links The Westminster Assembly Project Documents by the Westminster Assembly at Post-Reformation Digital Library English Reformation History of Congregationalism History of Presbyterianism History of the Church of England 1643 establishments in England Protestant councils and synods 17th-century church councils 17th-century Calvinism Church of Scotland