Teaching our kids to be polite and have manners is our job as a parent. Saying please and thank you, greeting people, and table manners are 3 areas that are really the foundation for teaching kids manners.
I do believe that when children have this good foundation of manners, it will grow and spill into other areas of their life. As they get older manners become how you treat other people, act in social situations, respect other’s opinions, and more. These are important things in our life