When was the Emperor of Austria and King of Hungary died who proclaimed December Constitution?
December Constitution:  The acts were proclaimed by Emperor Franz Joseph on December 21, 1867 and functioned as the supreme law of the land until the collapse of the empire in 1918. Franz Joseph I of Austria: Franz Joseph I or Francis Joseph I (German: "Franz Josef I." , Hungarian: "I. Ferenc József" , , Romanian: "Francisc Iosif" , Slovene: "Franc Jožef I." , Italian: "Francesco Giuseppe" , Croatian: "Franjo Josip I." ) (18 August 1830 – 21 November 1916) was Emperor of Austria and King of Hungary, King of Bohemia and many others (see grand title of the Emperor of Austria) from 2 December 1848 until his death on 21 November 1916.
i don't know