Anyone may ship or carry grain out of the nation, except to enemies, after paying duties. But the council may restrain this passage when necessary for the good of the nation. Any merchant, privy or stranger, who was robbed of goods on the sea or lost his ship by tempest or other misfortune on the sea banks, his goods coming to shore could not be declared Wreck, but were to be delivered to the merchant after he proves ownership in court by his marks on the goods or by good and lawful merchants. All stakes and obstacles set up in rivers impeding the passage of boats shall be removed. Waterpower was replacing foot power in driving the mills where cloth was cleaned and fulled. A boundary dispute between two barons resulted in the first true survey map. Nine cow pastures were divided by a boundary marked by a shield on a pole which the commission of true and sworn men had set up. King Richard II, an irresponsible sovereign, asserted an absolute supremacy of the king over Parliament and declared certain statutes which he claimed to have been forced on him to be revoked. He interfered with county elections of knights to Parliament by directing sheriffs to return certain named persons. He wanted to dispense altogether with Parliament and instead have a committee of representatives. He claimed that the goods of his subjects were his own and illegally taxed the counties. There were many disputes as to who should be his ministers. High treason was extended to include making a riot and rumor, compassing or purposing to depose the King, revoking one's homage or liege to the King, or attempting to repeal a statute. When Henry Bolingbroke reported to Parliament that another lord had cast doubt on the king's trustworthiness, a duel between them was arranged. But Richard, probably fearing the gain of power of the lord who won, instead exiled the two lords. He took possession of the Lancaster estates to which Bolingbroke was heir and forbade this inheritance. This made all propertied men anxious and they united behind Bolingbroke in taking up arms against Richard. Richard was not a warrior king and offered to resign the crown. The "Merciless Parliament" of 1388 swept out Richard's friends. Parliament deposed and imprisoned Richard. It revoked the extensions to the definition of high treason. It elected Bolingbroke, who claimed to be a descendant of Henry III, to be King Henry IV. This action established clearly that royal decrees were subordinate to parliamentary statutes, that Parliament was the ultimate legal arbiter of the realm, and that the consent of Parliament was necessary in determining kingship. The House of Commons became very powerful. It was responsible for the major part of legislation. It's members began to assert the privilege of free speech. That is, they wanted to discuss other matters than what was on the king's agenda and they opposed punishment for what they said unless it was treasonable. Henry IV agreed to their request