sentences:  The bulk of the Croatian nobility convened the Croatian Parliament in Cetin and chose to join the Habsburg monarchy under the Austrian king Ferdinand I von Habsburg.Some nobles dissented and supported John Zápolya, but the Habsburg option still prevailed in 1540, when John Zápolya died.Territory recovered by the Austrians from the Ottoman Empire was formed in 1745 as the Kingdom of Slavonia, subordinate to the Croatian Kingdom.