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1979 Nhl Wha Merger Merger Era League Realignment may refer to:
The 1979 merger agreement in which four World Hockey Association teams joined the National Hockey League, marking major league realignment.
The professional ice hockey league that preceded the 1979 NHL–WHA merger and supplied the teams that entered the NHL.
The NHL, the league that the WHA teams joined in 1979 as part of the merger and realignment.
The historical period following the NHL–WHA merger when divisional/conference structures and team groupings reflected the new membership.