Wikipedia - Ettan Fotboll

Ettan Fotboll, or simply Ettan (English: the one), which also is its common name in everyday speech, is the third level in the Swedish football league system and consists of 32 Swedish football teams. It was formerly simply known as Division 1. Division 1 was the second tier from 1987 to 1999, but was replaced by Superettan in 2000. It was reestablished for the 2006 season as the third tier below Superettan.

History

The old Division 1 replaced Division 2 as the second highest level in 1987 and consisted of two separate leagues with 14 teams each, Norra (Northern) and Södra (Southern), except for the 1991 and 1992 seasons which comprised 32 teams in four leagues, adding Östra (Eastern) and Västra (Western). As of the 2018 season, both Norra and Södra leagues of Ettan are composed of 16 clubs, similar to Allsvenskan and Superettan. And the league is focus for developing young stars.