Everyone has a culture. It shapes how we see ourselves, others, and the world.
Culture is like an iceberg.
The invisible aspects influence the visible ones. Understanding someone from another culture can sometimes be hard because people see the world, themselves, and others in fundamentally different ways. No matter what their culture, including our own, people behave as they do because of the things they believe in and value. Beliefs and values vary from culture to culture. It's easy to misunderstand things people do in a cross cultural setting.