When the great controversy broke out in England between Presbyterians and Independents, the fortunes of Massachusetts (who felt every wave of the struggle) and of New England were in the balance. Presbyterians in England proclaimed the doctrine of church unity, and of coercion if necessary, to procure it; the Independents, the doctrine of toleration. Puritans, inclining to Presbyterianism, were disturbed over reports from the colonies, and letters of inquiry were sent and answers returned explaining that, while the internal polity of the New England churches was not far removed from Presbyterianism, they differed widely from the Presbyterian standard as to a national church and as to the power of synods over churches, and that they also held to a much larger liberty in the right of each church to appoint its officers and control its own internal affairs. At the opening of the Long Parliament (1640-1644), many emigrants had returned to England from the colonies, and, under the leadership of the influential Hugh Peters, had given such an impetus to English thought that the Independent party rose to political importance and made popular the "New England Way."[b] The success of the Independents brought relief to Massachusetts, yet it was tinctured with apprehension lest "toleration" should be imposed upon her. The signing of the "League and Covenant" with England in 1643 by Scotland, the oath of the Commons to support it, and the pledge "to bring the churches of God in the three Kingdoms to the nearest conjunction and uniformity in religion, confession of faith, form of church government and catechizing" (including punishment of malignants and opponents of reformation in Church and State), carried menace to the colonies and to Massachusetts in particular. The supremacy of Scotch or English Nonconformity meant a severity toward any variation from its Presbyterianism as great as Laud had exercised.[c] In 1643 Parliament convened one hundred and fifty members[d] in the Westminster Assembly to plan the reform of the Church of England. Their business was to formulate a Confession which should dictate to all Englishmen what they should believe and how express it, and should also define a Church, which, preserving the inherent English idea of its relation to the State, should bear a close likeness to the Reformed churches of the Continent and yet approach as nearly as possible both to the then Church of Scotland and to the English Church of the time of Elizabeth. The work of this assembly, known as the Westminster Confession, demonstrated to the New England colonists the weakness of their church system and the need among them of religious unity.[e]