Who was the young man sent by the English to confront the french and ask them to leav3?

The young man sent by the English to confront the French and ask them to leave was Henry V of England. In 1415, he demanded that Charles VI of France recognize his claim to the French throne and relinquish control of French territories. This act was part of the larger conflict known as the Hundred Years' War, which saw a series of battles and political maneuvers between England and France. Henry's insistence on his claim ultimately led to the famous Battle of Agincourt.