why was so important for the king of france to be crowned, re joan of arc?

It was the belief at the time that Joan of Arc was blessed سے طرف کی God and visited سے طرف کی angels, and religion was extremely important back then, especially to Royals, as they believed it was their God دیا right to rule. So, to be crowed سے طرف کی a girl who was blessed سے طرف کی God and had the support of most of France would have boosted the King's authority.