Greetings.

Is there current or past nations, civilizations or uncivilized races or groups that had zero professing behaviors or activities about gods, deities, totally atheists ?

I don’t see how it could happen. Belief is a spectrum and we all have some degree of irrational or illogical behavior.

Even countries that actively discourage(d) religious belief have some fraction of the population engaging in it

35 minutes ago, Externet said:

Greetings.

Is there current or past nations, civilizations or uncivilized races or groups that had zero professing behaviors or activities about gods, deities, totally atheists ?

Yes