To understand the Hundred Years' War, one must look beyond the simple narrative of a long fight between England and France. The conflict, which spanned from 1337 to 1453, was not a single war but a series of distinct campaigns separated by periods of uneasy truce. While claims to the French throne provided the legal justification, the war's origins lie in a complex web of feudal obligations, economic ambition, and the political instability that followed the decline of the Capetian dynasty.
The Feudal Tapestry and the Succession Crisis
The primary cause of the Hundred Years' War was the ambiguous succession in the Kingdom of France following the death of Charles IV in 1328. The Salic Law, which barred inheritance through the female line, prevented Edward III of England from claiming the throne, even though his mother was Charles's sister. This legal hurdle did not stop Edward from pressing his claim, creating a fundamental dispute over legitimacy that the English crown used to justify its aggression. The issue was further complicated by the feudal structure of the time; the English monarchs held titles such as Duke of Aquitaine and Count of Flanders as vassals of the French crown. This created a paradox where the King of England was technically a subordinate of the King of France, a situation that was increasingly intolerable to both parties.
The Role of Economic Interests
While dynastic pride played a significant role, economic factors were equally instrumental in driving the nations toward conflict. The Flemish cities, located in what is now Belgium, were critical trading partners for England, particularly in the wool industry. Control over Flanders meant controlling a vital economic engine. Conversely, France sought to bring Flanders back under its direct influence to bolster its own treasury and weaken English commercial power. The competition over these lucrative trade routes and the wealth they generated transformed a dynastic squabble into a struggle for national survival and economic dominance.
The Trigger of Alliances and Military Incidents
The political landscape of Europe in the early 14th century was defined by shifting alliances that turned a local dispute into a continental conflict. When Edward III formally claimed the French throne in 1337, he sought security by allying with Flanders and the Holy Roman Empire. France, in turn, forged partnerships with Scotland to threaten England from the north. This web of treaties meant that a confrontation between the two primary rivals was inevitable. The war did not begin with a single declaration but rather with a series of maritime skirmishes and privateering actions, most notably the Battle of Sluys in 1340, which established English naval supremacy and solidified the conflict.
The Failure of Diplomacy
Over the course of the conflict, numerous attempts at peace were proposed, but structural issues prevented lasting resolution. The proposed marriage alliances and territorial compromises, such as the Treaty of Brétigny, often collapsed because they failed to address the core issue of sovereignty. The English insistence on holding French territories as a right of conquest clashed with the French doctrine of national integrity. Furthermore, the rise of strong leadership on both sides—such as Philip VI in France and Henry V in England—meant that compromise was often seen as weakness, leading to the resumption of hostilities whenever truces expired.
The Long Shadow of Nationalism
As the conflict dragged on for decades, the nature of the war evolved. What started as a feudal dispute between kings became a matter of national identity. The concept of "France" and "England" as distinct nations with unique cultures and interests solidified during the war. Figures like Joan of Arc emerged not just as military leaders but as symbols of French unity and resistance. This growing nationalism made it impossible for either side to accept permanent subjugation or humiliation, ensuring that the conflict would drain both nations for over a century.
