Italian irredentism in the context of "National Unity and Armed Forces Day"

The Unification of Italy (Italian: Unità d'Italia [uniˈta ddiˈtaːlja]), also known as the Risorgimento (Italian: [risordʒiˈmento]; lit. 'Resurgence'), was the 19th century political and social movement that in 1861 ended in the annexation of various states of the Italian peninsula and its outlying isles to the Kingdom of Sardinia, resulting in the creation of the Kingdom of Italy. Inspired by the rebellions in the 1820s and 1830s against the outcome of the Congress of Vienna, the unification process was precipitated by the Revolutions of 1848, and reached completion in 1870 after the capture of Rome and its designation as the capital of the Kingdom of Italy.

Individuals who played a major part in the struggle for unification and liberation from foreign domination included King Victor Emmanuel II; politician, economist and statesman Camillo Benso, Count of Cavour; general Giuseppe Garibaldi; and journalist and politician Giuseppe Mazzini. Borrowing from the old Latin title Pater Patriae of the Roman emperors, the Italians gave to King Victor Emmanuel II the epithet of Father of the Fatherland (Italian: Padre della Patria). Even after 1870, many ethnic Italian-speakers (Italians in Trentino-Alto Adige/Südtirol, Savoyard Italians, Corfiot Italians, Niçard Italians, Swiss Italians, Corsican Italians, Maltese Italians, Istrian Italians, and Dalmatian Italians) remained outside the borders of the Kingdom of Italy, planting the seeds of Italian irredentism.

Irredentism is one state's desire to annex the territory of another state. This desire can be motivated by ethnic reasons because the population of the territory is ethnically similar to or the same as the population of the parent state. Historical reasons may also be responsible, i.e., that the territory previously formed part of the parent state. Difficulties in applying the concept to concrete cases have given rise to academic debates about its precise definition. Disagreements concern whether either or both ethnic and historical reasons have to be present and whether non-state actors can also engage in irredentism. A further dispute is whether attempts to absorb a full neighboring state are also included. There are various types of irredentism. For typical forms of irredentism, the parent state already exists before the territorial conflict with a neighboring state arises. There are also forms of irredentism in which the parent state is newly created by uniting an ethnic group spread across several countries. Another distinction concerns whether the country to which the disputed territory currently belongs is a regular state, a former colony, or a collapsed state.

A central research topic concerning irredentism is the question of how it is to be explained or what causes it. Many explanations hold that ethnic homogeneity within a state makes irredentism more likely. Discrimination against the ethnic group in the neighboring territory is another contributing factor. A closely related explanation argues that national identities based primarily on ethnicity, culture, and history increase irredentist tendencies. Another approach is to explain irredentism as an attempt to increase power and wealth. In this regard, it is argued that irredentist claims are more likely if the neighboring territory is relatively rich. Many explanations also focus on the regime type and hold that democracies are less likely to engage in irredentism while anocracies are particularly open to it.

Italian fascism (Italian: fascismo italiano), also called classical fascism and fascism, is the original fascist ideology, which Giovanni Gentile and Benito Mussolini developed in Italy. The ideology of Italian fascism is associated with a series of political parties led by Mussolini: the National Fascist Party (PNF), which governed the Kingdom of Italy from 1922 until 1943, and the Republican Fascist Party (PFR), which governed the Italian Social Republic from 1943 to 1945. Italian fascism also is associated with the post–war Italian Social Movement (MSI) and later Italian neo-fascist political organisations.

Italian fascism originated from ideological combinations of ultranationalism and Italian nationalism, national syndicalism and revolutionary nationalism, and from the militarism of Italian irredentism to regain "lost overseas territories of Italy" deemed necessary to restore Italian nationalist pride. Italian Fascists also claimed that modern Italy was an heiress to the imperial legacy of Ancient Rome, and that there existed historical proof which supported the creation of an Imperial Fascist Italy to provide spazio vitale (vital space) for the Second Italo-Senussi War of Italian settler colonisation en route to establishing hegemonic control of the terrestrial basin of the Mediterranean Sea.

The National Fascist Party (Italian: Partito Nazionale Fascista, PNF) was a political party in Italy, created by Benito Mussolini as the political expression of Italian fascism and as a reorganisation of the previous Italian Fasces of Combat. The party ruled the Kingdom of Italy from 1922 when Fascists took power with the March on Rome until the fall of the Fascist regime in 1943, when Mussolini was deposed by the Grand Council of Fascism. The National Fascist Party was succeeded by the Republican Fascist Party in the territories under the control of the Italian Social Republic, and it was ultimately dissolved at the end of World War II.

The National Fascist Party was rooted in Italian nationalism and the desire to restore and expand Italian territories, which Italian Fascists deemed necessary for a nation to assert its superiority and strength and to avoid succumbing to decay. Italian Fascists claimed that modern Italy was the heir to ancient Rome and its legacy and historically supported the idea of ​​continued expansion of the Italian Empire to provide spazio vitale ("living space") for colonisation by Italian settlers and to establish control over the Mediterranean Sea. The party also supported social conservative stances.

Italian nationalism (Italian: Nazionalismo italiano) is a movement which believes that the Italians are a nation with a single homogeneous identity, and therefrom seeks to promote the cultural unity of Italy as a country. From an Italian nationalist perspective, Italianness is defined as claiming cultural and ethnic descent from the Latins, an Italic tribe which originally dwelt in Latium and came to dominate the Italian peninsula and much of Europe. Because of that, Italian nationalism has also historically adhered to imperialist theories.

Italian nationalism is often thought to trace its origins to the Renaissance, but only arose as a political force in the 1830s under the leadership of Giuseppe Mazzini. It served as a cause for Risorgimento in the 1860s to 1870s. Italian nationalism became strong again in World War I with Italian irredentist claims to territories held by Austria-Hungary, and during the era of Italian Fascism.

Italian irredentism in Corsica was a cultural and historical movement promoted by Italians and by people from Corsica who identified themselves as part of Italy rather than France, and promoted the Italian annexation of the island.

Italian irredentism in Malta is the movement that uses an irredentist argument to propose the incorporation of the Maltese islands into Italy, with reference to past support in Malta for Italian territorial claims on the islands. Although Malta had formally ceased to be part of the Kingdom of Sicily only since 1814 following the Treaty of Paris, Italian irredentism in Malta was mainly significant during the Italian Fascist era.