What significance does the Golem of Prague hold for the novel? How does the Golem tie in with Joe and Sam and their creation of comic-book superheroes?

What reasons could Michael Chabon have had for placing Joe, and therefore, the Kavaliers in the city of Prague and not in some other European city that fell to the Nazis during World War II? What significance and symbols does the city provide the novel?

In many ways, Joe is likened to the heroes in his comics. Does Joe fit the description of the archetypical hero? Explain why or why not.