 Complete the following phrase:  Unable to persuade the king to accept a Presbyterian settlement, the Scots exchanged him for half of the 400,000 they were owed by Parliament and returned home. Relations with the English Parliament and the increasingly independent English army grew strained and the balance of power shifted in Scotland, with Hamilton emerging as the leading figure. In 1647 he brokered the Engagement with the King, now held by the New Model Army, by which the Scots would support him, along with risings in England as part of a 