Capetian–Plantagenet rivalry
The Capetian–Plantagenet rivalry was a series of conflicts and disputes that covered a period of 100 years (1159–1259) during which the House of Capet, rulers of the Kingdom of France, fought the House of Plantagenet (also known as the House of Anjou), rulers of the Kingdom of England, to suppress the growing power of the Plantagenet-controlled Angevin Empire. Some historians refer to that series of events as the "First Hundred Years War".