Why are these top countries happier than the USA?

[i]Finland
Norway
Denmark
Sweden
Iceland
Switzerland
Netherlands
New Zealand
Canada
Austria[/i]
-The immigrants and citizens of these countries were rated on GDP, social support, health, life expectancy, freedom to do what you want and life choices, generosity, perception of corruption, crime, etc! Here is my hometown
[youtube=https://www.youtube.com/watch?v=PI7nrqH_YnE]