Croatia

Croatia was first internationally recognized as independent during Duke Branimir's reign.

Tomislav became the first king of Croatia, elevating the state to kingdom status.

Croatia entered a personal union with Hungary following a succession crisis.

The Croatian Parliament elected Ferdinand I of Austria to the Croatian throne amid Ottoman threats.

Zagreb proclaimed the State of Slovenes, Croats, and Serbs, independent from the Habsburg Empire.

Most of Croatia was incorporated into a Nazi-installed puppet state, the Independent State of Croatia.

Croatia declared independence, leading to a successful War of Independence over the next four years.