Hundred Years' War (1415–53)
The Lancastrian War was the third and final phase of the Anglo-French Hundred Years' War. It lasted from 1415, when King Henry V of England invaded Normandy, to 1453, when the English lost Bordeaux. It followed a long period of peace from the end of the Caroline War in 1389. The phase was named after the House of Lancaster, the ruling house of the Kingdom of England, to which Henry V belonged.
Hundred Years' War
The root causes of the conflict can be found in the demographic, economic and political crises of 14th century Europe. The outbreak of war was motivated by a gradual rise in tension between the kings of France and England about Gascony, Flanders and Scotland. The dynastic question, which arose due to an interruption of the direct male line of the Capetians, was the official pretext.