Answer:
It led to the collapse of the feudal system.
Step-by-step explanation:
Quoting Pearson World History:
The Hundred Years' War brought many changes to the late medieval world. The longbow and cannon gave common soldiers a new importance on the battlefield and undermined the value of armored knights on horseback. Although neither nobles nor commoners knew it then, feudal society was changing and medieval Europe was coming to an end. Knights and castles were doomed to disappear. Strong monarchs needed large armies, not feudal vassals, to fight their wars.