Opening the heart (開心) is happiness in Chinese? That’s funny. I only know Japanese, there it’s 幸せ.

I don’t think I have to explain that obviously, this is the case in Europe as well. E.g. Germany alone has 16 vastly different states, and each state has multiple subcultures. The main difference is, our subcultures are more than a thousand years old, and the US 250.

Agreed with you until you said Japanese kids learn more critical things about their past than Americans. That’s absolutely not the case.