The 1930s: birth of an industry
The 1940s: the golden age
The 1950s: comics code crackdown
The 1960s: superheroes return
The 1970s: underground comix rise
The 1980s: black-and-white boom (and bust)
The 1990s: "comics aren't just for kids"
The 2000s: webcomics and comic-cons
The 2010s: digital and diverse.