The Hundred Years War all began when the king of France challenged England's claim to French Fiefs. The English defeat the French in several battles early on. Despite their losses, a 17 year old peasant girl leads a French army to victory and inspires many French men and women to partake in their Nation and direct stronger feelings towards their leader. These events contribute to the decline of Feudalism by reducing the power from lords and monarchs to commoners. Military tech also reduced the need of knights and castles, while a new feeling of Nationalism helped to shift power away from lords to kings.