No identification of self or mission. No interference with the social development of said planet. No references to space or the fact that there are other worlds or civilizations.
Most attribute the creation of the ST Prime Directive to Gene Coon (Some credit Theodore Sturgeon). However, what I'd like to know is what was the first science fiction writer to come up with the concept of non-interference in a developing culture?
Note: This is not a duplicate of this question, as that is asking about the creation of the in universe prime directive.