The Battle of the Alps was the first major engagement by a state which abandoned its monarchy in what year?
Kingdom of Italy 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 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.
Kingdom of Croatia (Habsburg) The Kingdom of Croatia (Croatian: "Kraljevina Hrvatska"; Latin: "Regnum Croatiae" Hungarian: "Horvát Királyság" German: "Königreich Kroatien" ) was an administrative division that existed between 1527 and 1868 within the Habsburg Monarchy (also known between 1804 and 1867 as the Austrian Empire). The Kingdom was a part of the Lands of the Crown of St. Stephen, but was subject to direct Imperial Austrian rule for significant periods of time, including its final years. Its capital was Zagreb.