Constantinople since it is the heart of the empire.
Answer: She led an attack against an English army and freed the city of Orleans in only 10 days.
Explanation:
Joan of Arc was a 17-year-old French peasant that lead French forces in freeing the city of Orleans from the English troops during the Hundred Years’ War. Her accomplishment strengthened a sense of national identity and destiny, that would lead to the transformation from a feudal monarchy to a centralized government.