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.
History of France
The tensions between the Houses of Plantagenet and Capet climaxed during the so-called Hundred Years' War (actually several distinct wars over the period 1337 to 1453) when the Plantagenets claimed the throne of France from the Valois. This was also the time of the Black Death, as well as several civil wars. The French population suffered much from these wars. In 1420 by the Treaty of Troyes Henry V was made heir to Charles VI. Henry V failed to outlive Charles so it was Henry VI of England and France who consolidated the Dual-Monarchy of England and France.