Final answer:
Joan of Arc is the name of the young woman who led French forces to free Orleans during the Hundred Years' War, marking a significant turning point in the conflict.
Step-by-step explanation:
The girl who freed Orleans during the Hundred Years' War was named Joan of Arc. She is celebrated as a hero of France for her role during the latter stages of this prolonged conflict. Joan led the French army to several important victories, including the siege of Orleans in 1429, which was a turning point in the war. Her courage and determination inspired the French troops, and she became a symbol of French resistance against English domination.