National Football League (India)
The National Football League (commonly known as the NFL) was an association football league competition in India between 1996 and 2007 which was organised into three divisions. The league is now transformed into the I-League and continues with that name. The "Premier Division" of the league was first introduced in 1996, though the country already had a long history in the sport thanks to the likes of the IFA Shield and the Federation Cup. In fact, the Santosh Trophy (started in 1941) was the top football competition in the country before the then National Football League started.
Football in India
State league football is considered the best amateur leagues in India. Each state has their own league in India. There is no promotion/relegation between the state leagues and the I-League 2nd Division but there could be promotion/relegation between leagues within the state. For example, the Calcutta Football League has five divisions with promotion/relegation but the winner of the Calcutta Football League will not get promoted to the I-League 2nd Division. However, apart from the clubs already featuring in the I League, AIFF may select the next best achiever of the state league as an entrant to the I league 2nd Division.