It's challenging to determine which country's people are the "most polite" as politeness can be subjective and vary based on cultural norms and individual experiences. Different societies have their own unique ways of expressing politeness, and it's essential to avoid generalizing or making sweeping judgments about entire nations.
Politeness can be influenced by cultural factors such as language, customs, social norms, and historical context. For example, in Japan, politeness is highly valued and deeply ingrained in their culture, whereas in some Western cultures, directness and assertiveness may be considered more acceptable forms of communication.
Remember that individuals within any country can vary greatly in their behavior and manners, so it's best to treat people as individuals rather than making assumptions based on their nationality. Appreciating and respecting different cultural norms when interacting with people from various backgrounds is crucial to fostering positive and meaningful communication.