1. Disney developed early approaches to sound effects and animation in-house during the 1920s-1930s due to limitations of recording equipment, creating sound effects machines or having musicians simulate effects. 2. Marvel Comics was founded in 1939 and introduced many superhero characters during the 1940s "Golden Age", most notably Captain America. 3. After acquiring Marvel in 2009, Disney expanded the Marvel Cinematic Universe through successful films like Guardians of the Galaxy and developed Marvel-based video games, establishing Marvel as a leading pop culture brand.