How do you explain the turning point in the war that came with the advent of Joan of Arc?

The bottom line is that Jeanne was able to raise the morale of the French. Under her command, Orleans was liberated in 1429. Thus, the French called her the Maid of Orleans. Then France was not in the best condition. She was constantly defeated by the British. Nevertheless, with the advent of Zhanna d’Arc, the situation changed rapidly. The British suffered several defeats, and the French were able to liberate one of the largest cities – Orleans.