Hundred Years' War
Historians commonly divide the war into three phases separated by truces: the Edwardian War (1337–1360), the Caroline War (1369–1389), and the Lancastrian War (1415–1453). Local conflicts in neighbouring areas, which were contemporarily related to the war, including the War of the Breton Succession (1341–1365), the Castilian Civil War (1366–1369), the War of the Two Peters (1356–1369) in Aragon, and the 1383–85 crisis in Portugal, were availed by the parties to advance their agendas. Later historians adopted the term "Hundred Years' War" as a historiographical periodisation to encompass all of these events, thus constructing the longest military conflict in European history.
Hundred Years' War (1369–89)
The Treaty of Bruges was a treaty signed in 1375 between France and England in Bruges, present-day Belgium. The conference leading to the treaty was called at the instigation of Pope Gregory XI. France was represented in the negotiations by Philip II, Duke of Burgundy and England by John of Gaunt, 1st Duke of Lancaster. Negotiations broke down over the issue of sovereignty over the Aquitaine. The English wanted full sovereignty over Edward's territories, while the French insisted that the House of Valois
retain sovereignty of any Plantagenet provinces. Despite attempts by the Pope to broker a compromise, agreement could not be reached and the war resumed in 1377.