<span>The term superman or superman was developed by
writer Jerry Siegel and artist Joe Shuster in the year 1933. The character was
then sold to Detective Comics, Inc. (known today as DC Comics) in the year
1938. Today, Superman is an icon in the American culture because it helped
create superhero genres and American comic books. </span>
Retroactive interference<span> occurs when newly acquired information inhibits our ability to recall previously acquired information. </span>Interference<span> theory attempts to </span>explain why<span> we have trouble remembering things. Learning new material can sometimes interfere with our ability to recall previously learned the material. </span>
The main reason why the United States was able to assert itself on the World Stage after WWII was because the US emerged from the war with an incredibly high GDP, thanks mostly to war-time spending. This allowed the US to act as a world leader because so much else of the world had been crippled economically.
Answer:
I believe it was geography such as soil, rainfall, and growing seasons
