Hey there! So, curtesy is an old-fashioned word that means being polite and respectful. It's kind of like saying "please" and "thank you" when you ask for something.
In the olden days, when a man met a woman, he would show curtesy by taking off his hat and bowing or nodding his head. This was a way of showing respect and politeness towards the woman.
Curtesy can also be shown in modern times by being polite to others, like saying "excuse me" when you need to pass by someone or holding the door open for someone else. It's important to show curtesy because it helps make the world a nicer and friendlier place to live in.