Question: who has the best defense in nfl history?
Answer: 1976 Pittsburgh Steelers., 2013 Seattle Seahawks. ... , 2002 Tampa Bay Buccaneers. ... , 1962 Green Bay Packers. ... , 1972 Miami Dolphins. ... , 2008 Pittsburgh Steelers. ... , 1991 Philadelphia Eagles. ... , 2015 Denver Broncos. ...