 Complete the following phrase:  In the High Middle Ages, France was a powerful but highly decentralized feudal kingdom in which the kings authority was barely felt. King Philip Augustus achieved remarkable success in the strengthening of royal power and the expansion of his realm, defeating his rivals and doubling its size. By the end of his reign, the kingdom had emerged as the most powerful state in Europe. From the mid-14th to the mid-15th century, France was plunged into a series of dynastic conflicts for the French throne, collectively known as the Hundred Years War, and a distinct French identity emerged as a result. The French Renaissance saw art and culture flourish, 