American comic book

An American comic book is a thin book in the United States that has comics usually of superheroes. While it was created in 1933, American comic books first became popular after the 1938 publication of "Action Comics", which included the debut of the superhero Superman. 
This was followed by a superhero boom that lasted until the end of World War II. After the war, while superheroes were well known, the comic book industry later made comics of horror, crime, science fiction and romance.