The Jacksonville Jaguars and the Carolina Panthers. The Houston Texans joined in 2000.
The Cowboys joined the National Football League as an expansion team in 1960. The team will commemorate its 50 years in the league during the 2010 season.
The National Football League was founded in 1920 under the name American Professional Football Association. The name was changed to National Football League in 1922.
The NFL was formed in 1920 as the American Professional Football Association (APFA) before renaming itself the National Football League for the 1923 season.(from Wikipedia (National Football League)
Carolina panthers
As of the start of the 2008 season, that would be the Houston Texans who joined the NFL in 2002.The Houston Texas became the newest National Football League franchise in 2002.
denver broncos
16 by the Detroit lions in 2008-2009 NFL season
No. Preseason statistics are never officially recognized.
Probably 2011, when the NFL season started before the end of the MLB season.
Because the National League has been in existence longer than the American League ... the National League's first season as a major league was 1876 and the American League's first season as a major league was 1901.
The New Orleans Saints' inaugural season in the National Football League was 1967.
Brett Favre retired from the National Football League after the 2010 season.