But this struggle of the king and the Church was but one important episode of a contention between the king and the whole nation, which filled the years 1296-7. Edward had provoked the barons and the merchants of England no less than the clergy--the former by bidding them sail for Gascony in the winter, and pay him a heavy tax; the latter by seizing all their wool--England's greatest export--as it lay in harbour, and forcing them to pay a heavy fine, the _mal-tolt_, or evil tax, as it was called, before he would let it be sent over-sea. All this had been done without the consent of Parliament. The barons, headed by Roger Bigod, who had been told off to head the expedition to Guienne, refused to go abroad unless the king himself should lead them, urging that their feudal duty was only to defend the kingdom, and not to wage wars beyond it. Bigod flatly refused to set out unless the king went with him. "By God, Sir Earl, thou shalt either go or hang!" exclaimed Edward, irritated at the contumacy of one who, as Marshal of England, was bound to hold the most responsible post in the army that he was striving to raise. "And by God, Sir King, I will neither go nor hang!" shouted the equally enraged Earl Marshal. He flung himself out of the king's presence, and with the aid of his friend Bohun, the Earl of Hereford, gathered a great host, and prepared to withstand the king, if he should persist in endeavouring to carry out his design. Edward, however, sailed himself for the continent without forcing the barons to follow him. When he was gone, a Parliament met. Archbishop Winchelsey and the Earls of Norfolk and Hereford took the lead in protesting against the king's late arbitrary action, and by their council a recapitulation of the Great Charter was drawn up, with certain articles added at the end which expressly stipulated that the king should never raise any tax or impost without the consent of lords and commons in Parliament assembled--so that such an exaction as the late _mal-tolt_ would be in future illegal. The document, which is generally known as the _Confirmatio Cartarum_, was sent over-sea to the king. He received it at Ghent, and after much doubting signed it, for he always wished to have the good-will of the nation, and knew that a persistence in the exercise of his royal prerogative would bring on a rebellion such as that which had overturned his father in 1263. From this moment dates the first practical control of the Parliament over the royal revenue, for the clause in Magna Carta which stipulates for such a right had been so often violated both by Henry III. and his son, that it required to be fully vindicated by the _Confirmatio Cartarum_ before it was recognized as binding both by king and people.