The correct option is "Commonwealth"
Puritans was the name given in the 16th century to the most Protestant end within the Church of England that the thought of the English Reformation had not gone far enough in reforming the doctrines and structure of the church, that they wanted to purify their national church by removing each fragment of Catholic influence. In the 17th century many Puritans emigrated to the New World, where they sought to found a saint of the Commonwealth in New England. It remains the cultural puritanism dominant force in that area in the 19th century.