In which season did Linfield F.C. complete a clean sweep of all seven available trophies?
1911-12
1921-22
1931-32
1941-42
Answer
In the 1921-22 season, Linfield F.C. completed an unprecedented clean sweep of all seven available trophies. To date, this is the only recorded instance of a seven-trophy season being achieved in world football.
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