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 Henry 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 not to consider reports of proceedings unless they came to him through official channels.
The Law
After the Black Death of 1348 these statutes were enacted:
High treason was defined by statute in 1352 as levying war against the King, aiding the King's enemies, compassing or imagining the death of the King, Queen, or their eldest son and heir, or violating the Queen or the eldest unmarried daughter or the wife of the King's eldest son and heir; making or knowingly using counterfeits of the King's great or privy seal or coinage; or slaying the Chancellor, Treasurer, or any justice in the exercise of their duty. The penalty was forfeit of life and lands.
Petit treason was defined by statute and included a servant slaying his master, a wife her husband, or a man his lord, to whom was owed faith and obedience.
No one shall tell false news or lies about prelates, dukes, earls, barons, and other nobles and great men or the Chancellor, Treasurer, a Justice, Clerk of the Privy Seal, Steward of the King's house whereby debates and discords might arise between these lords or between the lords and the commons. Cases shall be tried by the King's Council, which included the Chancellor, Treasurer, and chief justices.
Preachers drawing crowds by ingenious sermons and inciting them to riot shall be arrested by sheriffs and tried by the ecclesiastical court.