When did the concept of pornography as a separate and distinct category emerge?

Question

When did the concept of pornography as a separate and distinct category emerge?

Quizplus · Accepted Answer

The concept of pornography as a separate and distinct category emerged in the mid-1800s with the invention of photography and the rise of mass-produced literature, which made erotic images and stories more widely available. Prior to this, sexual material was typically integrated into other forms of art or literature and not categorized separately as pornography.

When Did the Concept of Pornography as a Separate and Distinct