Do you like articles that talk about how great the Pittsburgh Steelers are from a historical perspective? I assume you do, so I have one for you, and it helps put into perspective just how good the organization has been since the league has been codified into the form that we recognize today.
For many good reasons, a lot of the history of the NFL is spoken of in terms of “the merger”, that referencing, of course, the agreement between the NFL and the AFL to merge into one league in 1970, and using that as the starting point for the ‘modern era’ of the game.