Conversation so far:
Why did Superstar Billy Graham return to the WWWF?
Graham returned to the WWWF in April 1977 after an agreement with promoter Vincent J. McMahon
What was Superstar Billy Graham's agreement with McMahon?
How did people respond to Superstar Billy Graham's return?

Question: What else happened during 1977-1981?
Self-contained rewrite: What else happened to Superstar Billy Graham during 1977-1981?