In March of 1965, then National Hockey League President Clarence Campbell announced plans for a change to the league’s structure that would forever alter the sport from therein going forward.
Of course, that event would be the league’s expansion, bringing NHL hockey to new cities and markets, creating hundreds of thousands of new fans in the process. The league’s first expansion also brought about changes to the game of hockey itself, both tactically upon how the game is coached and played, and changes to the rules which govern the game, either born from auxiliary reasoning, or facilitated out of necessity, depending on who you ask.