Victor Emmanuel III in the context of "Guglielmo Marconi"

The House of Savoy (Italian: Casa Savoia, French: Maison de Savoie) is a royal house (formally a dynasty) of Franco-Italian origin that was established in 1003 in the historical region of Savoy, which was originally part of the Kingdom of Burgundy and now lies mostly within southeastern France. Through gradual expansions, the family grew in power, first ruling the County of Savoy, a small Alpine county northwest of Italy, and later gaining absolute rule of the Kingdom of Sicily. During the years 1713 to 1720, they were handed the Kingdom of Sardinia and would exercise direct rule from then onward as Piedmont–Sardinia, which was the legal predecessor state of the Kingdom of Italy and the Italian Empire, which in turn are the predecessors of the present-day Italian Republic.

From rule of a region on the French–Italian border, by the time of the abolition of monarchy in Italy, the dynasty's realm grew to include nearly all of the Italian peninsula. Through its junior branch of Savoy-Carignano, the House of Savoy led the Italian unification in 1861, and ruled the Kingdom of Italy until 1946. They also briefly ruled the Kingdom of Spain during the 19th century. The Savoyard kings of Italy were Victor Emmanuel II, Umberto I, Victor Emmanuel III, and Umberto II. Umberto II reigned for only a few weeks, as the last king of Italy, before being deposed following the 1946 Italian institutional referendum, after which the Italian Republic was proclaimed.

The Lateran Treaty (Italian: Patti Lateranensi; Latin: Pacta Lateranensia) was one component of the Lateran Pacts of 1929, agreements between Italy under King Victor Emmanuel III and Prime Minister Benito Mussolini and the Holy See under Pope Pius XI to settle the long-standing Roman question. The treaty and associated pacts were named after the Lateran Palace, where they were signed on 11 February 1929. The Italian Parliament ratified them on 7 June 1929.

The treaty recognised Vatican City as an independent state under the sovereignty of the Holy See. Italy also agreed to give the Catholic Church financial compensation for the loss of the Papal States. In 1948, the Lateran Treaty was recognized in the Constitution of Italy as regulating the relations between the Italian Republic and the Catholic Church. While the treaty was significantly revised in 1984, ending the status of Catholicism as the sole state religion of Italy, the Vatican remains a distinct sovereign entity to the present day.

Benito Amilcare Andrea Mussolini (29 July 1883 – 28 April 1945) was an Italian politician and journalist who was the dictator of Italy during the Fascist era from the March on Rome in 1922 until his overthrow in 1943. He founded the National Fascist Party (PNF) and served as Prime Minister of Italy from 1922, later adopting the title Duce ("leader") of Italian fascism. Mussolini first organized the Italian Fasces of Combat in 1919, which evolved into the PNF that established a totalitarian regime. As the founder of fascism, Mussolini was a key inspiration and contributor to the rise of similar movements across Europe during the interwar period.

Mussolini was originally a socialist politician and journalist at the Avanti! newspaper. In 1912, he became a member of the National Directorate of the Italian Socialist Party (PSI), but was expelled for advocating military intervention in World War I. In 1914, Mussolini founded a newspaper, Il Popolo d'Italia, and served in the Royal Italian Army until he was wounded and discharged in 1917. He eventually denounced the PSI, his views pivoting to focus on Italian nationalism, and founded the fascist movement which opposed egalitarianism and class conflict, instead advocating "revolutionary nationalism" transcending class lines. In October 1922, following the March on Rome, he was appointed prime minister by King Victor Emmanuel III. After removing opposition through his secret police and outlawing labour strikes, Mussolini and his followers consolidated power through laws that transformed the nation into a one-party dictatorship. Within five years, he established dictatorial authority by legal and illegal means and aspired to create a totalitarian state. In 1929, he signed the Lateran Treaty to establish Vatican City.

The prime minister of Italy, officially the president of the Council of Ministers (Italian: Presidente del Consiglio dei ministri), is the head of government of the Italian Republic. The office of president of the Council of Ministers is established by articles 92–96 of the Constitution of Italy; the president of the Council of Ministers is appointed by the president of the Republic and must have the confidence of the Parliament to stay in office.

Prior to the establishment of the Italian Republic, the position was called President of the Council of Ministers of the Kingdom of Italy (Presidente del Consiglio dei ministri del Regno d'Italia). From 1925 to 1943 during the Fascist regime, the position was transformed into the dictatorial position of Head of the Government, Prime Minister, Secretary of State (Capo del Governo, Primo Ministro, Segretario di Stato) held by Benito Mussolini, Duce of Fascism, who officially governed on the behalf of the king of Italy. King Victor Emmanuel III removed Mussolini from office in 1943 and the position was restored with Marshal Pietro Badoglio becoming prime minister in 1943, although the original denomination of President of the Council was only restored in 1944, when Ivanoe Bonomi was appointed to the post of prime minister. Alcide De Gasperi became the first prime minister of the Italian Republic in 1946.

The Kingdom of Albania was in personal union with the Kingdom of Italy following the Italian invasion of Albania in 1939 and until the German occupation in September 1943. It is also referred to as Italian Albania or Greater Albania, and was a state controlled by Fascist Italy. The monarch was Italian King, Victor Emmanuel III, who was represented in Albania by Italian governors. During this time, Albania ceased to exist as an independent country and became an autonomous part of the Italian Empire. Officials intended to make Albania part of a Greater Italy by assimilating Albanians as Italians and colonizing Albania with Italian settlers from the Italian peninsula to transform it gradually into an Italian land.

In the Treaty of London during World War I, the Triple Entente had promised territories in Albania to Italy as a reward for fighting against the Central Powers. Italian Fascists claimed that Albanians were ethnically linked to Italians through association with the prehistoric populations, and that the major influence exerted by the Roman and Venetian empires over Albania gave Italy the right to possess it. In addition, several hundred thousand ethnic Albanians had already been absorbed into southern Italy, which was used to justify annexation as a measure that would unite all Albanians into one state. Italy supported Albanian irredentism, directed against the predominantly Albanian-populated Kosovo in Yugoslavia, but also against Epirus in Greece, particularly the border area of Chameria, inhabited by the Cham Albanian minority.

Salerno (UK: /sæˈlɛərnoʊ/, US: /səˈ-, sɑːˈ-, səˈlɜːrnoʊ/; Italian: [saˈlɛrno] ; Neapolitan: Salierno [saˈljernə]) is an ancient city and comune (municipality) in Campania, southwestern Italy, and is the capital of the province of the same name. It is the second largest city in the region by number of inhabitants, after Naples. It is located on the Gulf of Salerno on the Tyrrhenian Sea. Some of the Allied landings during Operation Avalanche (the invasion of Italy) occurred near Salerno. For a time the city became home to Victor Emmanuel III, the King of Italy, who moved from Rome in 1943 after Italy negotiated a peace with the Allies in World War II. Salerno thus became the capital of the Kingdom of the South, the seat of the provisional government and Italy's de facto capital for six months. The city has 125,958 inhabitants as of 2025.

Human settlement at Salerno has a rich past dating back to pre-historic times. In the early Middle Ages it was an independent Lombard principality, the Principality of Salerno, which around the 11th century comprised most of Southern Italy. During this time, the Schola Medica Salernitana, the first medical school in the world, was founded. In 1077, the Normans made Salerno the capital of their lands in all of continental southern Italy. In the 16th century, under the Sanseverino family, who were among the most powerful feudal lords in southern Italy, the city became a great centre of learning, culture and the arts, and the family hired several of the greatest intellectuals of the time. Later, in 1694, the city was struck by several catastrophic earthquakes and plagues. During a period of Spanish rule the city suffered a crisis which would last until the 18th century, but under Napoleon Salerno became part of the Parthenopean Republic. In the 19th century Salerno supported ideas of the Risorgimento and welcomed Garibaldi in 1861.

Umberto II (Italian: Umberto Nicola Tommaso Giovanni Maria di Savoia; 15 September 1904 – 18 March 1983) was the last king of Italy. Umberto's reign lasted for 34 days, from 9 May 1946 until his formal deposition on 12 June 1946, although he had been the de facto head of state since 1944. Due to his short reign, he was nicknamed the May King (Italian: Re di maggio).

Umberto was the third child and only son among the five children of Victor Emmanuel III and Elena of Montenegro. As heir apparent to the throne, he received a customary military education and pursued a military career afterwards. In 1940, he commanded an army group during the brief Italian invasion of France shortly before the French capitulation. In 1942, he was promoted to Marshal of Italy but was otherwise inactive as an army commander during much of World War II. Umberto turned against the war following Italian defeats at Stalingrad and El Alamein, and tacitly supported the ouster of Benito Mussolini.