What does it mean to be polite?

It's a little hard to explain because it's changing people to people. Cultures and traditions affect it. For instance, personal space larger than normal in the Korea and in the most Asian Country. But in the USA it's not like that. People are closer while talking to each other. Another instance, greeting. We are hugging for greeting in our country but in the Thailand, people are folding their hands and bowing. As can be seen from these examples, politeness changing to country to country and polite manners can changing for every country.