The 1960s marked a significant turning point in the comic book industry, with the emergence of the Marvel Comics universe. Stan Lee, Jack Kirby, and Steve Ditko created a new wave of characters, including Spider-Man, the X-Men, and the Avengers, which would go on to become household names. This period, known as the Silver Age, was characterized by a more nuanced and complex approach to storytelling, as well as a greater emphasis on character development and social commentary.