When was the Emperor of Austria and King of Hungary died who proclaimed December Constitution?
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. From 1 May 1850 to 24 August 1866 he was also President of the German Confederation. He was the longest-reigning Emperor of Austria and King of Hungary, as well as the third longest-reigning monarch of any country in European history, after Louis XIV of France and Johann II of Liechtenstein.
Frederick William III of Prussia Frederick William III (German: "Friedrich Wilhelm III" ) (3 August 1770 – 7 June 1840) was king of Prussia from 1797 to 1840. He ruled Prussia during the difficult times of the Napoleonic Wars and the end of the Holy Roman Empire. Steering a careful course between France and her enemies, after a major military defeat in 1806, he eventually and reluctantly joined the coalition against Napoleon in the "Befreiungskriege". Following Napoleon's defeat he was King of Prussia during the Congress of Vienna which assembled to settle the political questions arising from the new, post-Napoleonic order in Europe. He was determined to unify the Protestant churches, to homogenize their liturgy, their organization and even their architecture. The long-term goal was to have fully centralized royal control of all the Protestant churches in the Prussian Union of churches.