How did muddy ground affect the French army at the Battle of Agincourt?

At the Battle of Agincourt, the muddy ground—caused by a week of rain—significantly disadvantaged the French army by slowing their progress as they advanced toward the English lines.1

This delay left the French knights and cavalry exposed for a longer duration to lethal volleys from English longbows. Furthermore, as the French forces pushed forward, the narrow, muddy terrain caused them to become so tightly packed that they were unable to maneuver or use their weapons effectively against the English King Henry V's forces.1