The Battle of the Alps was the first major engagement by a state which abandoned its monarchy in what year?
Italian invasion of France: The Italian invasion of France, also called the Battle of the Alps (10–25 June 1940), was the first major Italian engagement of World War II and the last major engagement of the Battle of France. 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.
1946