Sure, and if not for Infinite Crisis' plot by Alexander Luthor and the rest of the CoIE holdovers, there would've been no shifting of Earths to create New Earth and the Multiverse; and if not for Identity Crisis, which exposed how horrible the post-CoIE heroes had become, there would've been no plot by Alex and the others; and if not for Crisis on Infinite Earths' conflict, after which Alex and the others went into their little outside-of-the-universe paradise, they wouldn't have witnessed the events of Identity Crisis; and if not for the first Earth-1 Flash/Earth-2 Flash team-up, there wouldn't have been any Multiverse to be destroyed in CoIE, forcing Alex and the others into their paradise; and if not for Superman's success in Action Comics #1, there would've been no more superheroes like the Flashes. So, really, this thread should be called "The 52 'Action Comics #1' Spinoffs, Which Ones & Why?" and it should include every superhero comic ever printed.