Map showing Yugoslav banovinas in 1929 prior to the agreement.
The Cvetković–Maček Agreement (Croatian: Sporazum Cvetković-Maček; Serbian: Споразум Цветковић-Мачек) was a political agreement on the internal divisions in the Kingdom of Yugoslavia which was settled on August 26, 1939 by Yugoslav prime minister Dragiša Cvetković and Vladko Maček, a Croat politician. The agreement established the Banovina of Croatia which was specifically intended to include as many ethnic Croats as possible, effectively creating a Croatian sub-state in Yugoslavia which Croat politicians lobbied for since the country was founded in 1918.
In April 1941 the Axis Powers invaded, occupied and dismembered Yugoslavia, establishing the Independent State of Croatia as their puppet state. On November 25, 1943 a meeting of the anti-fascist liberation movement of Bosnia and Herzegovina (ZAVNOBiH) was held in Mrkonjić Grad and presided over by Josip Broz Tito. The meeting produced a plan for the internal division of post-liberation Yugoslavia, which was to consist of six republics, thereby superseding any pre-war arrangements. Due to this, November 25 is celebrated as statehood day in Bosnia and Herzegovina.