positiveness

US /ˈpɑː.zə.t̬ɪv.nəs/
UK /ˈpɑː.zə.t̬ɪv.nəs/
1.

sự tích cực

the fact of being full of hope and confidence, or of giving cause for hope and confidence:

:
The Scottish star said that he liked the positiveness of America.