He also helped popularize Marvel comic books throughout the world.
I, like many folks didn't even know about Marvel's brand besides Spider Man and The Hulk but like many folks, i now research and read about those american comic books.
In 10 years from now, Marvel's brand will be an international houshold name and its characters will fall into the popular culture of many countries.
Don't think, people realize how huge those CBM characters have become outside the US, how big Marvel's brand is becoming and has progressed tremendously in international recognition.
No other DC character has been popularized to such degree but Batman and Superman(and that was 30 years ago) and Marvel Studios has been popularizing several characters on a global scale during the last 5 years,