The league was established in 1974 to reduce the number of second divisions in Germany from five to two and thereby allow direct promotion to the league winners. Along with the foundation of the 2. Bundesliga Nord, formed from clubs of the three former Regionalligas of Nord, Berlin and West, went the foundation of the 2. Bundesliga Süd, which was created from clubs of the other two Regionalligas, Süd and Südwest.
The league was created from twelve clubs from the West, seven from the North and one from Berlin, reflecting the playing strength of the old Regionalligas.
The winner of the 2. Bundesliga Nord was directly promoted to the Bundesliga, the runners-up played a home-and-away series versus the southern runners-up for the third promotion spot.
The bottom four teams were relegated to the Amateurligas, after 1978 to the new Oberligas. In 1979 only three teams were relegated. The winners of the Amateurligas/Oberligas had to determine the promoted teams by the way of a promotion play-off.
The league operated with 20 teams in its first six seasons, expanding to 22 in its last in 1981.
Until 1978, below the 2. Bundesliga Nord ranked the following Verbandsligas and Oberligas:
In 1981, the two 2. Bundesligas merged into one, country-wide division. Nine clubs from the south and eight from the north plus the three relegated teams from the Bundesliga were admitted into the new league, the 2. Bundesliga.
The league was dissolved in 1981. Eight clubs of the league went to the new 2. Bundesliga while the champion and runners-up were promoted to the Bundesliga. The twelve remaining clubs were relegated to the Amateurligas.
The third promotion spot to the Bundesliga was decided through a play-off round of the runners-up of the two 2nd Bundesligas. Here are the results of this round:
Deutschlands Fußball in Zahlen, (in German) An annual publication with tables and results from the Bundesliga to Verbandsliga/Landesliga, publisher: DSFS
kicker Almanach, (in German) The yearbook on German football from Bundesliga to Oberliga, since 1937, published by the kicker Sports Magazine
Die Deutsche Liga-Chronik 1945–2005(in German) History of German football from 1945 to 2005 in tables, publisher: DSFS, published: 2006