 Complete the following phrase:  On 29 October 1918, the Croatian Sabor declared independence and joined the newly formed State of Slovenes, Croats and Serbs, which in turn entered into union with the Kingdom of Serbia on 4 December 1918 to form the Kingdom of Serbs, Croats, and Slovenes. The new kingdom abolished traditional subdivisions of Croatia, including Požega County, in 1922 when oblasts were introduced, succeeded by the banovinas of Yugoslavia. The CvetkovićMaček Agreement of 1939 created the autonomous Banovina of Croatia, incorporating the region. In April 1941, 