Which 1970s NFL team was the first ever team to rush for over 3000 yards in a season?

Question

I am collecting some information about NFL. Can someone tell me that which 1970s NFL team was the first ever team to rush for over 3000 yards in a season?

Answer 1

1973 was the season of O.J. Simpson and the Bills. He rushed for 2003 yards in the season, helping the team's total of 3088 rushing yards. The 1978 New England Patriots rushed for 3165 yards to break the Bills' record. The 1972 perfect-season Miami Dolphins, having two 1000-yard rushers in the names of Larry Csonka and Mercury Morris, fell 40 yards short of the 3000-yard mark.