In the 13th century, after the Magna Carta failed to prevent the Baron Wars, King John and his son King Henry III’s reigns were characterized by numerous rebellions and civil wars, often provoked by incompetence and mismanagement in government. The reign of Henry III’s son Edward I (1272–1307), was rather more successful. Edward enacted numerous laws strengthening the powers of his government, and he summoned the first officially sanctioned Parliaments of England. He conquered Wales and attempted to use a succession dispute to gain control of the Kingdom of Scotland, though this developed into a costly and drawn-out military campaign.
After the disastrous reign of Edward II, which saw military losses and the Great Famine, Edward III reigned from 1327–1377, restoring royal authority and transforming the Kingdom of England into the most efficient military power in Europe. His reign saw vital developments in legislature and government—in particular the evolution of the English parliament—as well as the ravages of the Black Death. After defeating, but not subjugating, the Kingdom of Scotland, he declared himself rightful heir to the French throne in 1338, but his claim was denied. This started what would become known as the Hundred Years’ War.
The Hundred Years’ War is the term used to describe a series of conflicts from 1337 to 1453, between the rulers of the Kingdom of England and the House of Valois for control of the French throne. These 116 years saw a great deal of battle on the continent, most of it over disputes as to which family line should rightfully be upon the throne of France. By the end of the Hundred Years’ War, the population of France was about half what it had been before the era began.
The outbreak of war was motivated by a gradual rise in tension between the kings of France and England about Guyenne, Flanders, and Scotland. The dynastic question, which arose due to an interruption of the direct male line of the Capetians, was the official pretext.
The Hundred Years War was one of the defining events in the creation of a feeling of nationhood in France and England.
Although England had become a unified state with the Norman Conquest, for generations afterwards the upper classes felt a strong cultural affinity for France. Medieval French remained the language of choice for them, was the basic language of the law, and was a powerful class marker.
At the same time, France had not achieved a unified state. The kings of France controlled only their own territory around Paris. The great magnates operated their domains almost as independent countries.