Based on what I see on social media, I think I can answer these questions.

1 - Eastern Europe (especially Russia, Ukraine, Kazakhstan and Belarus), India, Sri Lanka, Pakistan, China and the USA (Pentecostals).

2 - To be honest, white women from Western countries (Australia, New Zealand, Germany, etc...) have healthier hair, but super long hair is rare due to the feminist culture of these countries.

3 - Some Eastern European country