English Government
The 100 Years' War had a huge effect on English government. The English were in debt, but the English Parliament had already raised taxes in 1341. No further taxes could be approved without the approval of Parliament. Also, the English monarchy became unstable in 1377 when Edward III died. His son, Edward, the Black Prince, had died of the plague a year before. It was not until the 1420s that England was led by a king like Edward III, which was Henry V.
After the War
In the 1450s, after the English were beaten, they returned to England and finally settled under the Tudor dynasty after the War of Roses. The French spent decades after the war trying to consolidate power over powerful provincial nobles. In the 1600s, Louis XIV, the "Sun King" came into reign, who finally controlled the French nobility.
Military Traditions
During the 100 Years' War, chivalry ended and the rules of conflict changed. Military strategies changed because cannons and gunpowder became regular. The 100 Year's War could be called a "military revolution" that started new military concepts. For example, the Venetian city-state replaced bowmen with trained gunners in 1490. Although soldiers on horseback remained until World War I, knights in armour faded away.
