The Paper Age
Roughly, the period of comics between 1938 and the mid 1950s. Protagonists during this period were usually two-fisted pulp heroes or enigmatic mystery men. Power levels tended to be much higher than an average human, while still much lower than readers would see in proceeding eras.
An important aspect of the Golden Age was the strict black-and-white morality. The good guys and the bad guys were very clearly delineated, and the readers never even entertained the thought that the heroes might lose. Most war and superhero comics were, after all, thinly veiled propaganda for the Allies, so the enemies were often either bumbling fools or over-the-top, mustache-twirling villains. And often offensive racial stereotypes, as well.