<Ol> <Li> Jump up ^ While the Kingdom of Italy ended in 1946, de Gasperi continued as Prime Minister until 1953 . </Li> </Ol> <Li> Jump up ^ While the Kingdom of Italy ended in 1946, de Gasperi continued as Prime Minister until 1953 . </Li> <P> The Kingdom of Italy (Italian: Regno d'Italia) was a state which existed from 1861--when King Victor Emmanuel II of Sardinia was proclaimed King of Italy--until 1946--when a constitutional referendum led civil discontent to abandon the monarchy and form the modern Italian Republic . The state was founded as a result of the unification of Italy under the influence of the Kingdom of Sardinia, which can be considered its legal predecessor state . </P> <P> Italy declared war on Austria in alliance with Prussia in 1866 and received the region of Veneto following their victory . Italian troops entered Rome in 1870, thereby ending more than one thousand years of Papal temporal power . Italy entered into a Triple Alliance with Germany and Austria - Hungary in 1882, following strong disagreements with France about the respective colonial expansions . However, even if relations with Berlin became very friendly, the alliance with Vienna remained purely formal as the Italians were keen to acquire Trentino and Trieste, corners of Austria - Hungary populated by Italians . So in 1915, Italy accepted the British invitation to join the Allied Powers, as the western powers promised territorial compensation (at the expense of Austria - Hungary) for participation that was more generous than Vienna's offer in exchange for Italian neutrality . Victory in the war gave Italy a permanent seat in the Council of the League of Nations . </P>

Who was proclaimed the king of united italy