New Names, New Formats
The National Championship was turned into the Cup of Portugal (or Portuguese Cup), this time with all clubs in the nation (except for those in the colonies). The Premier League (a round-basis experimental league) was transformed into the National Championship of the First Division (Campeonato Nacional da Primeira Divisão), or just First Division (Primeira Divisão) with the major clubs.
The also experimental Second League was given the name of National Championship of the Second Division (Campeonato Nacional da Segunda Divisão), or just Second Division (Segunda Divisão) divided into two zones (North and South) and later into three zones (North, Central and South). The Third Division was also created with several geographical series.
The irregular local championships were assigned to the 22 Portuguese District Football Associations, and, therefore, the District Championships were created.
Read more about this topic: Portuguese Football Competitions