Sava Banovina

The Sava Banovina or Sava Banate (), was a province (banovina) of the Kingdom of Yugoslavia between 1929 and 1939. It was named after the Sava River and consisted of much of the present-day Croatia (the areas of historical Croatia and Slavonia). Until 1931, it also comprised White Carniola, now part of Slovenia. The capital city of the Sava Banovina was Zagreb.
Borders.
According to the 1931 Constitution of the Kingdom of Yugoslavia, 
History.
In 1939, the Sava Banovina was merged with the Littoral Banovina and parts of neighboring provinces to create the Banovina of Croatia. In 1941, the World War II Axis Powers occupied the former area of the Sava Banovina. Small areas were annexed by Fascist Italy and Hungary with the remainder becoming a part of the Independent State of Croatia. Following World War II, the region was made a part of Croatia within a federal Communist Yugoslavia.
List of Bans.
The following is the list of people who held the title of Ban (governor) of Sava Banovina:
(a) = acting