You're confirming what I said earlier. There are both happy and unhappy "homogenous" countries. There's literally no correlation.

Instead of stopping there you're regurgitating, and it's unfortunate I'm confirming Poe's law, Mein Kampf.

> The US was 85-90% white in 1965. That's pretty homogenous.

I think you know nothing about culture, ethnicity, or the history of bigotry, xenophobia, and racism in the US if you can confidently make that statement. You're reducing all the diverse peoples that made up the nation into a single group based on their skin color.