Why might a Sun in Virgo person excel in activities requiring fine motor skills, and what hobbies or careers suit them best?

What’s a quiet sign someone is actually strong mentally? I think its that you can decide between important and bad things and not give a fck about not important things.
Why do French people seem so monotone and reserved in their communication compared to Americans? What's the cultural reason behind it?
How can you create a harmonious family environment when your marriage involves blending different cultural backgrounds?