Svetozar Pribićević was a Croatian Serb politician in Austria-Hungary and later Kingdom of Yugoslavia. He was one of the main proponents of Yugoslavism and a federalized South Slavic state which would later turn out to be Yugoslavia. However, he later became a bitter opponent of the same policy that was promoted by King Alexander I.

Alexander I, also known as Alexander the Unifier, was King of the Serbs, Croats and Slovenes from 16 August 1921 to 3 October 1929 and King of Yugoslavia from 3 October 1929 until his assassination in 1934. His reign of 13 years is the longest of the three monarchs of the Kingdom of Yugoslavia.