Alexander I Karađorđević, 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.
The Kingdom of Yugoslavia was a country in Southeast and Central Europe that existed from 1918 until 1941. From 1918 to 1929, it was officially called the Kingdom of Serbs, Croats, and Slovenes, but the term "Yugoslavia" has been its colloquial name as early as 1922 due to its origins. The official name of the state was changed to "Kingdom of Yugoslavia" by King Alexander I on 3 October 1929.
The 6 January Dictatorship was a royal dictatorship established in the Kingdom of Serbs, Croats and Slovenes by King Alexander I with the ultimate goal to create a Yugoslav ideology and a single Yugoslav nation. It began on 6 January 1929, when the king prorogued parliament and assumed control of the state, and ended with the 1931 Yugoslav Constitution.
January 6 is the sixth day of the year in the Gregorian calendar; 359 days remain until the end of the year.